diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 4c0fdcdd24a..7123ea526c5 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -1,8 +1,56 @@
 = Changelog
 
-== 2026.3.0 (work in progress)
+== 2026.5.0
 
-=== Shapes
+=== Pitches
+
+- Measure the performance of Sirius Web based applications
+
+
+=== Architectural decision records
+
+
+
+
+=== Deprecation warning
+
+
+
+
+=== Breaking changes
+
+
+
+
+=== Dependency update
+
+
+
+
+=== Bug fixes
+
+
+
+
+=== New Features
+
+- https://github.com/eclipse-sirius/sirius-web/issues/3647[#3647] [diagram] Add support for diagram style with background customization
+
+
+=== Improvements
+
+- https://github.com/eclipse-sirius/sirius-web/issues/6313[#6313] [doc] Improve the templates used for the functional and technical specifications.
+The functional specification will now use the same naming conventions as the shape up methodology with https://basecamp.com/shapeup/1.5-chapter-06[pitches] instead of shapes (https://basecamp.com/shapeup/1.1-chapter-02[shaping] is the process by which pitches are being created).
+The new template for functional specification is located in `doc/iterations/YYYY-MM/pitches/pitch.adoc`.
+The technical specifications will now rely on a new architectural decision record template located in `doc/adrs/adr.adoc`.
+This new template for ADRs will have several additional requirements compared to the previous one.
+It will require contributors to specify the persons involved in the decision process, to details the qualities expected of the solution, to list the various options considered, to clarify why a specific option has been selected, its advantages and drawbacks, which steps will be taken for the implementation among other things.
+
+
+
+== 2026.3.0
+
+=== Pitches
 
 - Keep details tab open on selection change
 - Add support the for selection dialog that can be confirmed without making a selection
@@ -159,7 +207,7 @@ Trees defined via the view DSL can alternatively provide a tooltip expression vi
 
 == 2026.1.0
 
-=== Shapes
+=== Pitches
 
 - Allow configuration of workbench panels
 - Remove usage of foreign keys between bounded contexts
@@ -449,7 +497,7 @@ Downstream applications can now implement `IUndoRedoIgnoreInputPredicate` to ign
 
 == 2025.12.0
 
-=== Shapes
+=== Pitches
 
 - Add command palette on projects page
 - Add support for indexing models
@@ -697,7 +745,7 @@ The executor typically needs to check the `menuEntryId` of the input to ensure i
 
 == 2025.10.0
 
-=== Shapes
+=== Pitches
 
 - Add support for exporting query result
 - Add support for search history
@@ -941,7 +989,7 @@ We have also added the `IInputDispatcher` which is in charge of dispatching an i
 
 == v2025.8.0
 
-=== Shapes
+=== Pitches
 
 - Add support for diagram customization
 - Add the ability to share the workbench state
@@ -1208,7 +1256,7 @@ The dialog can now display an impact analysis report, but isn't in charge of ret
 
 == v2025.6.0
 
-=== Shapes
+=== Pitches
 
 - Control the views available in a workbench
 
@@ -1422,7 +1470,7 @@ The _ExpandAll_ tool is now a Sirius Web contribution that can be enabled via th
 
 == v2025.4.0
 
-=== Shapes
+=== Pitches
 
 - Add support for edges connected to edges
 - Preserve custom edges rectilinearity
@@ -1655,7 +1703,7 @@ See the ADR 190 for additional details on the goal of this refactoring.
 
 == v2025.2.0
 
-=== Shapes
+=== Pitches
 
 - Add support for a query view
 - Lower the coupling between project and editing context
@@ -1858,7 +1906,7 @@ To achieve that a new concept, `ProjectSemanticData` has been added along with a
 
 == v2025.1.0
 
-=== Shapes
+=== Pitches
 
 
 === Architectural decision records
@@ -1988,7 +2036,7 @@ Downstream applications with a custom explorer that relies on `ExplorerDropTreeI
 
 == v2024.11.0
 
-=== Shapes
+=== Pitches
 
 - Add support for a table widget in form representations
 - Automatically select newly created nodes on diagrams
@@ -2178,7 +2226,7 @@ This will allow specifier to create images that fir perfectly in the project tem
 
 == v2024.9.0
 
-=== Shapes
+=== Pitches
 
 - Add tree representation in the view DSL
 - Add support for object duplication from Explorer
@@ -2318,7 +2366,7 @@ A migration participant has been added to automatically keep compatible all diag
 
 == v2024.7.0
 
-=== Shapes
+=== Pitches
 
 - Add support for text alignment on labels
 - Add support for gantt representation
@@ -2465,7 +2513,7 @@ We cannot rely on the error message recaived from the backend since Cross Origin
 
 == v2024.5.0
 
-=== Shapes
+=== Pitches
 
 - Configurable collapse
 - Add support for EMF models migration
@@ -2630,7 +2678,7 @@ They still support returning an `java.time.Instant` object directly.
 
 == v2024.3.0
 
-=== Shapes
+=== Pitches
 
 - Transform Sirius Web into an extensible platform
 - Facilitate the insertion of elements into a list node
@@ -2840,7 +2888,7 @@ In other scenarios, the default creation position border remains the eastern one
 
 == v2024.1.0
 
-=== Shapes
+=== Pitches
 
 - Add support for Portal representation
 - Add support for Gantt representation
@@ -3031,7 +3079,7 @@ image:doc/screenshots/biggerResizeHandles2.png[Compartment with header without s
 
 == v2023.12.0
 
-=== Shapes
+=== Pitches
 
 - Add support for custom nodes in Diagram representations
 - Add the possibility to specify a size ratio on node.
@@ -3244,7 +3292,7 @@ Node will not be outside of their container, nor on a node header because of a m
 
 == v2023.10.0
 
-=== Shapes
+=== Pitches
 
 - Add tool sections in the View DSL
 - Add support for Precondition Expressions in Tools
@@ -3395,7 +3443,7 @@ These color palettes are accessible in studio projects but are not visible in th
 
 == v2023.8.0
 
-=== Shapes
+=== Pitches
 
 - Add disable / enable concept for widgets
 - Add new custom widget to edit single and multi-valued references
@@ -3546,7 +3594,7 @@ Labels and node list are rendered with css.
 
 == v2023.6.0
 
-=== Shapes
+=== Pitches
 
 - Filter tree based representations
 - Add pages to form in the view DSL
diff --git a/diagram-image-server/package-lock.json b/diagram-image-server/package-lock.json
index 927ce90746e..3853085196c 100644
--- a/diagram-image-server/package-lock.json
+++ b/diagram-image-server/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "diagram-image-server",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "diagram-image-server",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "dependencies": {
         "cookie-parser": "^1.4.7",
diff --git a/diagram-image-server/package.json b/diagram-image-server/package.json
index 71ec08b4adb..9195886040f 100644
--- a/diagram-image-server/package.json
+++ b/diagram-image-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "diagram-image-server",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "main": "index.mjs",
diff --git a/doc/adrs/adr.adoc b/doc/adrs/adr.adoc
new file mode 100644
index 00000000000..7d66810253c
--- /dev/null
+++ b/doc/adrs/adr.adoc
@@ -0,0 +1,97 @@
+:author: lists the author of this document
+:date: YYYY-MM-DD
+:status: {proposed | rejected | accepted | deprecated | superseded by}
+:consulted: lists everyone whose opinions are sought and with whom there is a two-way communication
+:informed: lists everyone who is kept up-to-date on progress in one-way communication
+:deciders: lists everyone involved in the decision
+:pitch: link to the related pitch (if any)
+:issue: link to the related issue
+
+= ADR-XXX - Title of The Architectural Decision Record
+
+== Context and Problem Statement
+
+Describes the context and problem statement in a few sentences.
+One may want to articulate the problem in form of a question or provide an illustrative story that invites to a conversation.
+Links to collaboration boards or issue management systems can go here too.
+
+
+== Decision Drivers
+
+Desired qualities, forces, faced concerns of potential solutions are identified here:
+
+- First criteria used to evaluate a potential solution
+- Second criteria used to evaluate a potential solution
+- Third criteria used to evaluate a potential solution
+
+
+== Considered Options
+
+This section lists the alternatives (or choices) investigated.
+The selected options should be listed first in the end here.
+
+=== First Option
+
+Description of the first option
+
+
+=== Second Option
+
+Description of the second option
+
+
+=== Third Option
+
+Description of the third option
+
+
+== Decision Outcome
+
+In the context of <use case>, facing <concerns> we decided for <option> to achieve <quality>, accepting <downside>.
+
+
+Some examples of justifications are: 
+
+- It is the only option that meets a certain decision driver
+- It resolves a particular force
+- It comes out best when comparing options
+- We applied this design pattern several times with success in the past and we have similar requirements here
+- We performed a proof of concept and the results were convincing
+- We have the relevant skills for this specific approach
+
+
+== Consequences
+
+=== Advantages
+
+Advantages of the selected option.
+
+
+=== Drawbacks
+
+Drawbacks of the selected option such as suspected API breaks, code migration required, database migration required, code to deprecate, new patterns to use, change in dependencies, performance impact, increase in continuous integration time, etc.
+
+
+== More Information
+
+This section should contain additional details on the decision made such as:
+
+=== Implementation
+
+- How this decision should be realized?
+- Which steps should be taken for the implementation?
+  - Should we start frontend first or backend first?
+  - Do we need a temporary capability to disable the feature while it is being developed?
+  - Do we need to perform some refactoring to prepare this work?
+
+
+=== Decision Details
+
+- Additional evidence for the decision outcome (possibly including assumptions made).
+- Details of the team agreement on the decision (including the confidence level).
+- When it should be re-visited
+
+
+=== References
+
+- Links to other decisions and resources might appear in this section as well.
\ No newline at end of file
diff --git a/doc/iterations/2026.5/measure_the_performance_of_sirius_web_based_applications.adoc b/doc/iterations/2026.5/measure_the_performance_of_sirius_web_based_applications.adoc
new file mode 100644
index 00000000000..09d7ce200de
--- /dev/null
+++ b/doc/iterations/2026.5/measure_the_performance_of_sirius_web_based_applications.adoc
@@ -0,0 +1,78 @@
+:author: Stéphane Bégaudeau
+:date: 2026-03-25
+:status: proposed
+:consulted: Pierre-Charles David
+:informed: Florian Rouëné
+:deciders: Stéphane Bégaudeau
+:issue: https://github.com/eclipse-sirius/sirius-web/issues/6326
+
+= (XS) Measure the performance of Sirius Web based applications
+
+== Problem
+
+We want to be able to measure the performance of Sirius Web based applications.
+We need to measure and track the changes in the performance of our application over time to be able to detect potential regressions, identify major performance issues and to track the progress on any future performance improvements.
+
+We don't know yet what kind of performance issues are the most important and what we want to focus on.
+As such, the performance test suites should help us evaluate various aspect of the performance of the application such as:
+
+- latency
+- throughput
+- network usage
+- cpu usage
+- memory usage
+
+
+== Key Result
+
+We should have a tool and some patterns to perform performance testing.
+It should allow us to measure the performance of the GraphQL HTTP API, the REST API and the WebSocket API simultaneously in one test if necessary.
+It should provide us with clear reports allowing us to track the performance of various use cases over time.
+We should be able to have keep some history of those performance reports.
+This history could be maintained manually in another document for now.
+We should keep a history of those performance reports to track the evolution of the performance of our application over time and to be able to identify potential regressions.
+
+The solution must be applicable to Sirius Web and downstream projects.
+It should be possible to reuse fragments of performance tests from Sirius Web in downstream applications.
+Those fragments should share the same philosophy as our reusable tests services such as query runners with the minimal amount of coupling necessary.
+
+
+=== Acceptance Criteria
+
+The performance test suites should be executable locally with a development instance.
+Such an instance should be able to have the frontend and backend running on two different ports (e.g. http://localhost:5173 and http://localhost:8080).
+They should also be able to run with a production instance where everything is packed into one executable.
+
+The performance test suites should also run during our continuous integration process.
+
+
+== Solution
+
+We will create a set of performance test suites based on reusable fragments that can be composed to write complex tests.
+It should also help initialize the state of the application with data that matches real usage patterns of Sirius Web.
+
+
+=== Scenario
+
+Sirius Web contributors should be able to write new performance tests and run existing ones.
+The manipulation of those performance tests should be straightforward and documented.
+
+
+=== Breadboarding
+
+No user interface needed
+
+
+=== Cutting backs
+
+We should be able to see a code coverage report of the application after the execution of the performance test suites to evaluate the parts of the application that have not be covered by the tests.
+
+
+== Rabbit holes
+
+We may identify some performance issues during our tests, we may not solve them but we will track them using Github issues.
+
+
+== No-gos
+
+None
\ No newline at end of file
diff --git a/doc/iterations/YYYY-MM/shapes/shape.adoc b/doc/iterations/YYYY-MM/pitches/pitch.adoc
similarity index 72%
rename from doc/iterations/YYYY-MM/shapes/shape.adoc
rename to doc/iterations/YYYY-MM/pitches/pitch.adoc
index 797a7716d3e..b3a7da9473d 100644
--- a/doc/iterations/YYYY-MM/shapes/shape.adoc
+++ b/doc/iterations/YYYY-MM/pitches/pitch.adoc
@@ -1,4 +1,12 @@
-= (appetite) Shape
+:author: lists the author of this document
+:date: YYYY-MM-DD
+:status: {proposed | rejected | accepted | deprecated | superseded by}
+:consulted: lists everyone whose opinions are sought and with whom there is a two-way communication
+:informed: lists everyone who is kept up-to-date on progress in one-way communication
+:deciders: lists everyone involved in the decision
+:issue: link to the related issue
+
+= (appetite) Pitch title
 
 == Problem
 
diff --git a/integration-tests-cypress/package-lock.json b/integration-tests-cypress/package-lock.json
index 193a334440b..8632259322f 100644
--- a/integration-tests-cypress/package-lock.json
+++ b/integration-tests-cypress/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "sirius-web-integration-tests-cypress",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "sirius-web-integration-tests-cypress",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "dependencies": {
         "prettier": "2.7.1"
diff --git a/integration-tests-cypress/package.json b/integration-tests-cypress/package.json
index a978bc5eb0b..3f90362db94 100644
--- a/integration-tests-cypress/package.json
+++ b/integration-tests-cypress/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sirius-web-integration-tests-cypress",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "license": "EPL-2.0",
   "private": true,
   "devDependencies": {
diff --git a/integration-tests-playwright/package-lock.json b/integration-tests-playwright/package-lock.json
index c2f71db98ca..318f890498c 100644
--- a/integration-tests-playwright/package-lock.json
+++ b/integration-tests-playwright/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "sirius-web-integration-tests-playwright",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "sirius-web-integration-tests-playwright",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "dependencies": {
         "prettier": "2.7.1"
diff --git a/integration-tests-playwright/package.json b/integration-tests-playwright/package.json
index 4c296acb2e6..6e60d110023 100644
--- a/integration-tests-playwright/package.json
+++ b/integration-tests-playwright/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sirius-web-integration-tests-playwright",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "license": "EPL-2.0",
   "private": true,
   "devDependencies": {
diff --git a/integration-tests-playwright/playwright/e2e/diagrams/diagram.spec.ts b/integration-tests-playwright/playwright/e2e/diagrams/diagram.spec.ts
index 712359bb95f..f9ef1bdf4f6 100644
--- a/integration-tests-playwright/playwright/e2e/diagrams/diagram.spec.ts
+++ b/integration-tests-playwright/playwright/e2e/diagrams/diagram.spec.ts
@@ -66,3 +66,59 @@ test.describe('diagram', () => {
     await expect(page.locator('.react-flow__minimap')).toBeAttached();
   });
 });
+
+test.describe('diagram', () => {
+  let projectId;
+  test.beforeEach(async ({ page, request }) => {
+    const project = await new PlaywrightProject(request).createProject('diagram-list', 'papaya-empty');
+    projectId = project.projectId;
+
+    await page.goto(`/projects/${projectId}/edit`);
+    const playwrightExplorer = new PlaywrightExplorer(page);
+    await playwrightExplorer.uploadDocument('diagramPapayaClassNode.xml');
+    await playwrightExplorer.expand('diagramPapayaClassNode.xml');
+    await playwrightExplorer.expand('Project');
+    await playwrightExplorer.expand('Component');
+
+    await playwrightExplorer.createRepresentation('Component', 'Class Diagram', 'diagram');
+  });
+
+  test.afterEach(async ({ request }) => {
+    await new PlaywrightProject(request).deleteProject(projectId);
+  });
+
+  test('when a diagram has a conditional style, then the style is changed after triggering the condition', async ({
+    page,
+  }) => {
+    await expect(page.getByTestId('rf__wrapper')).toBeAttached();
+    const playwrightExplorer = new PlaywrightExplorer(page);
+    await playwrightExplorer.expand('Package');
+    await page.waitForFunction(
+      () => {
+        const div = document.querySelector('[data-testid="rf__background"]');
+        if (!div) {
+          return false;
+        }
+
+        const background = window.getComputedStyle(div).getPropertyValue('background');
+        return background.includes('Drag and drop elements to get started');
+      },
+      { timeout: 2000 }
+    );
+
+    await (await playwrightExplorer.getTreeItemLabel('NewClass')).dragTo(page.getByTestId('rf__wrapper'));
+
+    await page.waitForFunction(
+      () => {
+        const div = document.querySelector('[data-testid="rf__background"]');
+        if (!div) {
+          return false;
+        }
+
+        const background = window.getComputedStyle(div).getPropertyValue('background');
+        return !background.includes('Drag and drop elements to get started');
+      },
+      { timeout: 2000 }
+    );
+  });
+});
diff --git a/package-lock.json b/package-lock.json
index 28867c31123..653f2633052 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@eclipse-sirius/sirius-components-parent",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@eclipse-sirius/sirius-components-parent",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "workspaces": [
         "./packages/*/frontend/*"
@@ -8709,7 +8709,7 @@
     },
     "packages/browser/frontend/sirius-components-browser": {
       "name": "@eclipse-sirius/sirius-components-browser",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -8762,7 +8762,7 @@
     },
     "packages/charts/frontend/sirius-components-charts": {
       "name": "@eclipse-sirius/sirius-components-charts",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@eclipse-sirius/sirius-components-tsconfig": "*",
@@ -8782,7 +8782,7 @@
     },
     "packages/core/frontend/sirius-components-core": {
       "name": "@eclipse-sirius/sirius-components-core",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -8821,7 +8821,7 @@
     },
     "packages/core/frontend/sirius-components-impactanalysis": {
       "name": "@eclipse-sirius/sirius-components-impactanalysis",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -8861,7 +8861,7 @@
     },
     "packages/core/frontend/sirius-components-omnibox": {
       "name": "@eclipse-sirius/sirius-components-omnibox",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -8900,7 +8900,7 @@
     },
     "packages/datatree/frontend/sirius-components-datatree": {
       "name": "@eclipse-sirius/sirius-components-datatree",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -8939,7 +8939,7 @@
     },
     "packages/deck/frontend/sirius-components-deck": {
       "name": "@eclipse-sirius/sirius-components-deck",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -8978,7 +8978,7 @@
     },
     "packages/diagrams/frontend/sirius-components-diagrams": {
       "name": "@eclipse-sirius/sirius-components-diagrams",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9038,7 +9038,7 @@
     },
     "packages/formdescriptioneditors/frontend/sirius-components-formdescriptioneditors": {
       "name": "@eclipse-sirius/sirius-components-formdescriptioneditors",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9094,7 +9094,7 @@
     },
     "packages/forms/frontend/sirius-components-forms": {
       "name": "@eclipse-sirius/sirius-components-forms",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9149,7 +9149,7 @@
     },
     "packages/forms/frontend/sirius-components-widget-reference": {
       "name": "@eclipse-sirius/sirius-components-widget-reference",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9214,7 +9214,7 @@
     },
     "packages/forms/frontend/sirius-components-widget-table": {
       "name": "@eclipse-sirius/sirius-components-widget-table",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9272,7 +9272,7 @@
     },
     "packages/gantt/frontend/sirius-components-gantt": {
       "name": "@eclipse-sirius/sirius-components-gantt",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9311,7 +9311,7 @@
     },
     "packages/palette/frontend/sirius-components-palette": {
       "name": "@eclipse-sirius/sirius-components-palette",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9350,7 +9350,7 @@
     },
     "packages/portals/frontend/sirius-components-portals": {
       "name": "@eclipse-sirius/sirius-components-portals",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9393,12 +9393,12 @@
     },
     "packages/releng/frontend/sirius-components-tsconfig": {
       "name": "@eclipse-sirius/sirius-components-tsconfig",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0"
     },
     "packages/selection/frontend/sirius-components-selection": {
       "name": "@eclipse-sirius/sirius-components-selection",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9457,7 +9457,7 @@
     },
     "packages/sirius-web/frontend/sirius-web": {
       "name": "@eclipse-sirius/sirius-web",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "dependencies": {
         "@apollo/client": "3.10.4",
@@ -9535,7 +9535,7 @@
     },
     "packages/sirius-web/frontend/sirius-web-application": {
       "name": "@eclipse-sirius/sirius-web-application",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9650,7 +9650,7 @@
     },
     "packages/sirius-web/frontend/sirius-web-papaya": {
       "name": "@eclipse-sirius/sirius-web-papaya",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9767,7 +9767,7 @@
     },
     "packages/sirius-web/frontend/sirius-web-view-fork": {
       "name": "@eclipse-sirius/sirius-web-view-fork",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9884,7 +9884,7 @@
     },
     "packages/tables/frontend/sirius-components-tables": {
       "name": "@eclipse-sirius/sirius-components-tables",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9926,7 +9926,7 @@
     },
     "packages/trees/frontend/sirius-components-trees": {
       "name": "@eclipse-sirius/sirius-components-trees",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
@@ -9969,7 +9969,7 @@
     },
     "packages/validation/frontend/sirius-components-validation": {
       "name": "@eclipse-sirius/sirius-components-validation",
-      "version": "2026.1.6",
+      "version": "2026.3.0",
       "license": "EPL-2.0",
       "devDependencies": {
         "@apollo/client": "3.10.4",
diff --git a/package.json b/package.json
index 5a01c0519a0..1f42fa16dc3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-parent",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/browser/backend/pom.xml b/packages/browser/backend/pom.xml
index 575e287d405..9686f558d63 100644
--- a/packages/browser/backend/pom.xml
+++ b/packages/browser/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-browser-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-browser-root</name>
 	<description>Sirius Components Browser Root</description>
diff --git a/packages/browser/backend/sirius-components-browser-graphql/pom.xml b/packages/browser/backend/sirius-components-browser-graphql/pom.xml
index 8b354d9b5d8..75cbad5e258 100644
--- a/packages/browser/backend/sirius-components-browser-graphql/pom.xml
+++ b/packages/browser/backend/sirius-components-browser-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-browser-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-browser-graphql</name>
 	<description>Sirius Components Browser GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-browser</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/browser/backend/sirius-components-collaborative-browser/pom.xml b/packages/browser/backend/sirius-components-collaborative-browser/pom.xml
index 29158caddc6..91cc8290b85 100644
--- a/packages/browser/backend/sirius-components-collaborative-browser/pom.xml
+++ b/packages/browser/backend/sirius-components-collaborative-browser/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-browser</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-browser</name>
 	<description>Sirius Components Collaborative Browser</description>
 
@@ -40,28 +40,28 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/browser/frontend/sirius-components-browser/package.json b/packages/browser/frontend/sirius-components-browser/package.json
index 9e73f6a05db..bad16b70b72 100644
--- a/packages/browser/frontend/sirius-components-browser/package.json
+++ b/packages/browser/frontend/sirius-components-browser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-browser",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/charts/backend/pom.xml b/packages/charts/backend/pom.xml
index ca282025d81..0227edc57b1 100644
--- a/packages/charts/backend/pom.xml
+++ b/packages/charts/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-charts-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-charts-root</name>
 	<description>Sirius Components Charts Root</description>
diff --git a/packages/charts/backend/sirius-components-charts-graphql/pom.xml b/packages/charts/backend/sirius-components-charts-graphql/pom.xml
index ab0143bce09..6e172a217b8 100644
--- a/packages/charts/backend/sirius-components-charts-graphql/pom.xml
+++ b/packages/charts/backend/sirius-components-charts-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-charts-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-charts-graphql</name>
 	<description>Sirius Components Charts GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-charts</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/charts/backend/sirius-components-charts/pom.xml b/packages/charts/backend/sirius-components-charts/pom.xml
index aff27f8248a..a1f5ecce0b8 100644
--- a/packages/charts/backend/sirius-components-charts/pom.xml
+++ b/packages/charts/backend/sirius-components-charts/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-charts</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-charts</name>
 	<description>Sirius Components Charts</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/charts/backend/sirius-components-collaborative-charts/pom.xml b/packages/charts/backend/sirius-components-collaborative-charts/pom.xml
index feb234bc73d..ad46dbe2cef 100644
--- a/packages/charts/backend/sirius-components-collaborative-charts/pom.xml
+++ b/packages/charts/backend/sirius-components-collaborative-charts/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-charts</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-charts</name>
 	<description>Sirius Components Collaborative Charts</description>
 
@@ -40,23 +40,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-charts</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/charts/frontend/sirius-components-charts/package.json b/packages/charts/frontend/sirius-components-charts/package.json
index a8524c616b4..b45d0f2df49 100644
--- a/packages/charts/frontend/sirius-components-charts/package.json
+++ b/packages/charts/frontend/sirius-components-charts/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-charts",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/core/backend/pom.xml b/packages/core/backend/pom.xml
index 74c44a0ca21..0e0a007b429 100644
--- a/packages/core/backend/pom.xml
+++ b/packages/core/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-core-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-core-root</name>
 	<description>Sirius Components Core Root</description>
diff --git a/packages/core/backend/sirius-components-annotations-spring/pom.xml b/packages/core/backend/sirius-components-annotations-spring/pom.xml
index 3032054a5e5..bb9023791f0 100644
--- a/packages/core/backend/sirius-components-annotations-spring/pom.xml
+++ b/packages/core/backend/sirius-components-annotations-spring/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-annotations-spring</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-annotations-spring</name>
 	<description>Sirius Components Annotations Spring</description>
 
diff --git a/packages/core/backend/sirius-components-annotations/pom.xml b/packages/core/backend/sirius-components-annotations/pom.xml
index d8c8522592a..7869649bbf6 100644
--- a/packages/core/backend/sirius-components-annotations/pom.xml
+++ b/packages/core/backend/sirius-components-annotations/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-annotations</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-annotations</name>
 	<description>Sirius Components Annotations</description>
 
diff --git a/packages/core/backend/sirius-components-collaborative/pom.xml b/packages/core/backend/sirius-components-collaborative/pom.xml
index eb038d8e7da..2e642c4e788 100644
--- a/packages/core/backend/sirius-components-collaborative/pom.xml
+++ b/packages/core/backend/sirius-components-collaborative/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative</name>
 	<description>Sirius Components Collaborative</description>
 
@@ -56,28 +56,28 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-datatree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/core/backend/sirius-components-core-graphql/pom.xml b/packages/core/backend/sirius-components-core-graphql/pom.xml
index b901788778b..ed4fa15f386 100644
--- a/packages/core/backend/sirius-components-core-graphql/pom.xml
+++ b/packages/core/backend/sirius-components-core-graphql/pom.xml
@@ -18,13 +18,13 @@
     <parent>
         <groupId>org.eclipse.sirius</groupId>
         <artifactId>sirius-web-parent</artifactId>
-        <version>2026.1.6</version>
+        <version>2026.3.0</version>
         <relativePath>../../../releng/backend/sirius-web-parent</relativePath>
     </parent>
 
     <groupId>org.eclipse.sirius</groupId>
     <artifactId>sirius-components-core-graphql</artifactId>
-    <version>2026.1.6</version>
+    <version>2026.3.0</version>
     <name>sirius-components-core-graphql</name>
     <description>Sirius Components Core Graphql</description>
 
@@ -36,23 +36,23 @@
         <dependency>
             <groupId>org.eclipse.sirius</groupId>
             <artifactId>sirius-components-graphql-api</artifactId>
-            <version>2026.1.6</version>
+            <version>2026.3.0</version>
         </dependency>
         <dependency>
             <groupId>org.eclipse.sirius</groupId>
             <artifactId>sirius-components-collaborative</artifactId>
-            <version>2026.1.6</version>
+            <version>2026.3.0</version>
         </dependency>
         <dependency>
             <groupId>org.eclipse.sirius</groupId>
             <artifactId>sirius-components-tests</artifactId>
-            <version>2026.1.6</version>
+            <version>2026.3.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.eclipse.sirius</groupId>
             <artifactId>sirius-components-spring-tests</artifactId>
-            <version>2026.1.6</version>
+            <version>2026.3.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/packages/core/backend/sirius-components-core/pom.xml b/packages/core/backend/sirius-components-core/pom.xml
index 948d84d2669..054826ccdd1 100644
--- a/packages/core/backend/sirius-components-core/pom.xml
+++ b/packages/core/backend/sirius-components-core/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-core</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-core</name>
 	<description>Sirius Components Core</description>
 
@@ -41,17 +41,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-events</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/core/backend/sirius-components-events/pom.xml b/packages/core/backend/sirius-components-events/pom.xml
index c74cd55c0bf..27234d07fd4 100644
--- a/packages/core/backend/sirius-components-events/pom.xml
+++ b/packages/core/backend/sirius-components-events/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-events</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-events</name>
 	<description>Sirius Components Events</description>
 
diff --git a/packages/core/backend/sirius-components-graphql-api/pom.xml b/packages/core/backend/sirius-components-graphql-api/pom.xml
index f984bba6a19..2bca23c15a4 100644
--- a/packages/core/backend/sirius-components-graphql-api/pom.xml
+++ b/packages/core/backend/sirius-components-graphql-api/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-graphql-api</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-graphql-api</name>
 	<description>Sirius Components GraphQL API</description>
 
@@ -40,17 +40,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-annotations-spring</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/core/backend/sirius-components-representations/pom.xml b/packages/core/backend/sirius-components-representations/pom.xml
index 5733770f158..8ac82523fdd 100644
--- a/packages/core/backend/sirius-components-representations/pom.xml
+++ b/packages/core/backend/sirius-components-representations/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-representations</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-representations</name>
 	<description>Sirius Components Representations</description>
 
@@ -36,7 +36,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-annotations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/core/frontend/sirius-components-core/package.json b/packages/core/frontend/sirius-components-core/package.json
index af0a2496b84..c222edc5ab3 100644
--- a/packages/core/frontend/sirius-components-core/package.json
+++ b/packages/core/frontend/sirius-components-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-core",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/core/frontend/sirius-components-impactanalysis/package.json b/packages/core/frontend/sirius-components-impactanalysis/package.json
index 0af1bbc127c..738df957724 100644
--- a/packages/core/frontend/sirius-components-impactanalysis/package.json
+++ b/packages/core/frontend/sirius-components-impactanalysis/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@eclipse-sirius/sirius-components-impactanalysis",
   "author": "Eclipse Sirius",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "license": "EPL-2.0",
   "repository": {
     "type": "git",
diff --git a/packages/core/frontend/sirius-components-omnibox/package.json b/packages/core/frontend/sirius-components-omnibox/package.json
index ddda7007e8e..13200c327db 100644
--- a/packages/core/frontend/sirius-components-omnibox/package.json
+++ b/packages/core/frontend/sirius-components-omnibox/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@eclipse-sirius/sirius-components-omnibox",
   "author": "Eclipse Sirius",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "license": "EPL-2.0",
   "repository": {
     "type": "git",
diff --git a/packages/datatree/backend/pom.xml b/packages/datatree/backend/pom.xml
index 4b282221619..1353f03e5ad 100644
--- a/packages/datatree/backend/pom.xml
+++ b/packages/datatree/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-datatree-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-datatree-root</name>
 	<description>Sirius Components Data Tree Root</description>
diff --git a/packages/datatree/backend/sirius-components-datatree/pom.xml b/packages/datatree/backend/sirius-components-datatree/pom.xml
index 848dd111248..db2f36bace5 100644
--- a/packages/datatree/backend/sirius-components-datatree/pom.xml
+++ b/packages/datatree/backend/sirius-components-datatree/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-datatree</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-datatree</name>
 	<description>Sirius Components Data Tree</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/datatree/frontend/sirius-components-datatree/package.json b/packages/datatree/frontend/sirius-components-datatree/package.json
index a32356d3cbe..1755d1caa3a 100644
--- a/packages/datatree/frontend/sirius-components-datatree/package.json
+++ b/packages/datatree/frontend/sirius-components-datatree/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-datatree",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/deck/backend/pom.xml b/packages/deck/backend/pom.xml
index 8edeaedb944..515e3077d05 100644
--- a/packages/deck/backend/pom.xml
+++ b/packages/deck/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-deck-root</artifactId>
-    <version>2026.1.6</version>
+    <version>2026.3.0</version>
 
 	<name>sirius-components-deck-root</name>
 	<description>Sirius Components Deck Root</description>
diff --git a/packages/deck/backend/sirius-components-collaborative-deck/pom.xml b/packages/deck/backend/sirius-components-collaborative-deck/pom.xml
index 5afe1f62c20..cb3369c9076 100644
--- a/packages/deck/backend/sirius-components-collaborative-deck/pom.xml
+++ b/packages/deck/backend/sirius-components-collaborative-deck/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-deck</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-deck</name>
 	<description>Sirius Components Collaborative deck</description>
 
@@ -40,23 +40,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/deck/backend/sirius-components-deck-graphql/pom.xml b/packages/deck/backend/sirius-components-deck-graphql/pom.xml
index f5b084a5773..b185e2a2e63 100644
--- a/packages/deck/backend/sirius-components-deck-graphql/pom.xml
+++ b/packages/deck/backend/sirius-components-deck-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-deck-graphql</artifactId>
-    <version>2026.1.6</version>
+    <version>2026.3.0</version>
 	<name>sirius-components-deck-graphql</name>
 	<description>Sirius Components Deck GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/deck/backend/sirius-components-deck/pom.xml b/packages/deck/backend/sirius-components-deck/pom.xml
index 24ec8c29328..eda89c600c8 100644
--- a/packages/deck/backend/sirius-components-deck/pom.xml
+++ b/packages/deck/backend/sirius-components-deck/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-deck</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-deck</name>
 	<description>Sirius Components Deck</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/deck/frontend/sirius-components-deck/package.json b/packages/deck/frontend/sirius-components-deck/package.json
index c66327348fa..67e617e3a9c 100644
--- a/packages/deck/frontend/sirius-components-deck/package.json
+++ b/packages/deck/frontend/sirius-components-deck/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-deck",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/diagrams/backend/pom.xml b/packages/diagrams/backend/pom.xml
index 27730ba98a7..5bab6749f4d 100644
--- a/packages/diagrams/backend/pom.xml
+++ b/packages/diagrams/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-diagrams-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-diagrams-root</name>
 	<description>Sirius Components Diagrams Root</description>
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/pom.xml b/packages/diagrams/backend/sirius-components-collaborative-diagrams/pom.xml
index e4c80a56b6b..ff8c30e628c 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/pom.xml
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-diagrams</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-diagrams</name>
 	<description>Sirius Components Collaborative Diagrams</description>
 
@@ -40,23 +40,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/main/resources/schema/diagram.graphqls b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/main/resources/schema/diagram.graphqls
index bec9ad1bb8b..f63fbae11dd 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/main/resources/schema/diagram.graphqls
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/main/resources/schema/diagram.graphqls
@@ -34,9 +34,14 @@ type Diagram implements Representation {
   targetObjectId: ID!
   nodes: [Node!]!
   edges: [Edge!]!
+  style: DiagramStyle!
   layoutData: DiagramLayoutData!
 }
 
+type DiagramStyle {
+  background: String!
+}
+
 type DiagramLayoutData {
   nodeLayoutData: [NodeLayoutData!]!
   edgeLayoutData: [EdgeLayoutData!]!
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/DiagramEventProcessorTests.java b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/DiagramEventProcessorTests.java
index 0ccb625a0bb..f051c2f5b29 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/DiagramEventProcessorTests.java
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/DiagramEventProcessorTests.java
@@ -31,6 +31,7 @@
 import org.eclipse.sirius.components.core.api.IPayload;
 import org.eclipse.sirius.components.core.api.IRepresentationDescriptionSearchService;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.InsideLabel;
 import org.eclipse.sirius.components.diagrams.Node;
 import org.junit.jupiter.api.Test;
@@ -55,6 +56,7 @@ public class DiagramEventProcessorTests {
             .targetObjectId("targetObjectId")
             .nodes(List.of(INITIAL_TEST_NODE))
             .edges(List.of())
+            .style(DiagramStyle.newDiagramStyle().build())
             .build();
 
     private final IDiagramCreationService diagramCreationService = new MockDiagramCreationService(INITIAL_TEST_DIAGRAM);
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/CreateDiagramEventHandlerTests.java b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/CreateDiagramEventHandlerTests.java
index f58dd4a6fa4..be54138888a 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/CreateDiagramEventHandlerTests.java
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/CreateDiagramEventHandlerTests.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -33,6 +33,7 @@
 import org.eclipse.sirius.components.core.api.IPayload;
 import org.eclipse.sirius.components.core.api.IRepresentationDescriptionSearchService;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.description.DiagramDescription;
 import org.eclipse.sirius.components.representations.Failure;
 import org.eclipse.sirius.components.representations.IRepresentationDescription;
@@ -64,6 +65,7 @@ public Optional<IRepresentationDescription> findById(IEditingContext editingCont
                         .targetObjectIdProvider(variableManager -> "targetObjectId")
                         .dropHandler(variableManager -> new Failure(""))
                         .iconURLsProvider(variableManager -> List.of())
+                        .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
                         .build();
 
                 return Optional.of(diagramDescription);
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetConnectorToolsEventHandlerTests.java b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetConnectorToolsEventHandlerTests.java
index cbc2225be03..5235371db54 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetConnectorToolsEventHandlerTests.java
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetConnectorToolsEventHandlerTests.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2022, 2025 Obeo.
+ * Copyright (c) 2022, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -35,6 +35,7 @@
 import org.eclipse.sirius.components.core.api.IRepresentationDescriptionSearchService;
 import org.eclipse.sirius.components.diagrams.CollapsingState;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.HeaderSeparatorDisplayMode;
 import org.eclipse.sirius.components.diagrams.InsideLabel;
 import org.eclipse.sirius.components.diagrams.InsideLabelLocation;
@@ -143,6 +144,7 @@ public void testGetConnectorTools() {
                 .edgeDescriptions(new ArrayList<>())
                 .dropHandler(variableManager -> new Failure(""))
                 .iconURLsProvider(variableManager -> List.of())
+                .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
                 .build();
 
         Node sourceNode = this.getNode(SOURCE_NODE_ID, SOURCE_NODE_TARGET_ID);
@@ -208,6 +210,7 @@ private Diagram getDiagram(String id, List<Node> nodes) {
                 .targetObjectId("diagramTargetObjectId")
                 .nodes(nodes)
                 .edges(List.of())
+                .style(DiagramStyle.newDiagramStyle().build())
                 .build();
     }
 }
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetNodeDescriptionsEventHandlerTests.java b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetNodeDescriptionsEventHandlerTests.java
index d6093cf8cbe..52ff97766db 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetNodeDescriptionsEventHandlerTests.java
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/GetNodeDescriptionsEventHandlerTests.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024, 2025 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -29,6 +29,7 @@
 import org.eclipse.sirius.components.core.api.IPayload;
 import org.eclipse.sirius.components.core.api.IRepresentationDescriptionSearchService;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.description.NodeDescription;
 import org.eclipse.sirius.components.diagrams.layoutdata.DiagramLayoutData;
 import org.eclipse.sirius.components.representations.IRepresentationDescription;
@@ -81,6 +82,7 @@ public Optional<IRepresentationDescription> findById(IEditingContext editingCont
                 }
                 return desc;
             }
+
             @Override
             public Map<String, IRepresentationDescription> findAll(IEditingContext editingContext) {
                 var descriptions = new HashMap<String, IRepresentationDescription>();
@@ -106,6 +108,7 @@ public Map<String, IRepresentationDescription> findAll(IEditingContext editingCo
                 .layoutData(new DiagramLayoutData(Map.of(), Map.of(), Map.of()))
                 .nodes(List.of())
                 .targetObjectId("")
+                .style(DiagramStyle.newDiagramStyle().build())
                 .build();
 
         handler.handle(payloadSink, changeDescriptionSink, editingContext, new DiagramContext(diagram), input);
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramBuilder.java b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramBuilder.java
index 415627bf8c6..5117e6634f1 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramBuilder.java
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramBuilder.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -19,6 +19,7 @@
 import org.eclipse.sirius.components.diagrams.ArrowStyle;
 import org.eclipse.sirius.components.diagrams.CollapsingState;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.Edge;
 import org.eclipse.sirius.components.diagrams.EdgeStyle;
 import org.eclipse.sirius.components.diagrams.EdgeType;
@@ -54,6 +55,7 @@ public Diagram getDiagram(String id) {
                 .targetObjectId("diagramTargetObjectId")
                 .nodes(List.of())
                 .edges(List.of())
+                .style(DiagramStyle.newDiagramStyle().build())
                 .build();
     }
 
diff --git a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramDescriptionBuilder.java b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramDescriptionBuilder.java
index 97a5921278a..eaf458c60e4 100644
--- a/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramDescriptionBuilder.java
+++ b/packages/diagrams/backend/sirius-components-collaborative-diagrams/src/test/java/org/eclipse/sirius/components/collaborative/diagrams/handlers/TestDiagramDescriptionBuilder.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -18,6 +18,7 @@
 import java.util.function.Function;
 
 import org.eclipse.sirius.components.diagrams.ArrowStyle;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.EdgeStyle;
 import org.eclipse.sirius.components.diagrams.EdgeType;
 import org.eclipse.sirius.components.diagrams.FreeFormLayoutStrategy;
@@ -56,6 +57,7 @@ public DiagramDescription getDiagramDescription(String diagramDescriptionId, Lis
                 .edgeDescriptions(edgeDescriptions)
                 .dropHandler(variableManager -> new Failure(""))
                 .iconURLsProvider(variableManager -> List.of())
+                .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
                 .build();
     }
 
@@ -64,14 +66,14 @@ public EdgeDescription getEdgeDescription(String edgeDescriptionId, NodeDescript
         Function<VariableManager, List<Element>> targetProvider = variableManager -> List.of();
 
         Function<VariableManager, EdgeStyle> edgeStyleProvider = variableManager ->
-            EdgeStyle.newEdgeStyle()
-                .size(2)
-                .lineStyle(LineStyle.Dash_Dot)
-                .sourceArrow(ArrowStyle.InputArrowWithDiamond)
-                .targetArrow(ArrowStyle.None)
-                .color("rgb(1, 2, 3)")
-                .edgeType(EdgeType.Manhattan)
-                .build();
+                EdgeStyle.newEdgeStyle()
+                        .size(2)
+                        .lineStyle(LineStyle.Dash_Dot)
+                        .sourceArrow(ArrowStyle.InputArrowWithDiamond)
+                        .targetArrow(ArrowStyle.None)
+                        .color("rgb(1, 2, 3)")
+                        .edgeType(EdgeType.Manhattan)
+                        .build();
 
         Function<VariableManager, String> idProvider = variableManager -> variableManager.get(VariableManager.SELF, String.class).orElse(null);
 
diff --git a/packages/diagrams/backend/sirius-components-diagrams-graphql/pom.xml b/packages/diagrams/backend/sirius-components-diagrams-graphql/pom.xml
index 12af4c8ca6f..ddb67cd99bc 100644
--- a/packages/diagrams/backend/sirius-components-diagrams-graphql/pom.xml
+++ b/packages/diagrams/backend/sirius-components-diagrams-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-diagrams-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-diagrams-graphql</name>
 	<description>Sirius Components Diagrams GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/diagrams/backend/sirius-components-diagrams-tests/pom.xml b/packages/diagrams/backend/sirius-components-diagrams-tests/pom.xml
index 4acd33b6497..ce925b2d72b 100644
--- a/packages/diagrams/backend/sirius-components-diagrams-tests/pom.xml
+++ b/packages/diagrams/backend/sirius-components-diagrams-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-diagrams-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-diagrams-tests</name>
 	<description>Sirius Components Diagrams Tests</description>
 
@@ -36,7 +36,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.assertj</groupId>
@@ -45,12 +45,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/diagrams/backend/sirius-components-diagrams/pom.xml b/packages/diagrams/backend/sirius-components-diagrams/pom.xml
index ba30aa4a8e8..c0b44bb0892 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/pom.xml
+++ b/packages/diagrams/backend/sirius-components-diagrams/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-diagrams</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-diagrams</name>
 	<description>Sirius Components Diagrams</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/Diagram.java b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/Diagram.java
index b69974add55..0fd8e29f77f 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/Diagram.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/Diagram.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2024 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -28,6 +28,7 @@
  */
 @Immutable
 public final class Diagram implements IRepresentation {
+
     public static final String KIND = IRepresentation.KIND_PREFIX + "?type=Diagram";
 
     private String id;
@@ -44,6 +45,8 @@ public final class Diagram implements IRepresentation {
 
     private DiagramLayoutData layoutData;
 
+    private DiagramStyle style;
+
     private Diagram() {
         // Prevent instantiation
     }
@@ -80,6 +83,10 @@ public DiagramLayoutData getLayoutData() {
         return this.layoutData;
     }
 
+    public DiagramStyle getStyle() {
+        return this.style;
+    }
+
     public static Builder newDiagram(String id) {
         return new Builder(id);
     }
@@ -101,9 +108,10 @@ public String toString() {
      */
     @SuppressWarnings("checkstyle:HiddenField")
     public static final class Builder {
-        private String id;
 
-        private String kind = KIND;
+        private final String id;
+
+        private final String kind = KIND;
 
         private String targetObjectId;
 
@@ -113,6 +121,8 @@ public static final class Builder {
 
         private List<Edge> edges;
 
+        private DiagramStyle style;
+
         private DiagramLayoutData layoutData = new DiagramLayoutData(Map.of(), Map.of(), Map.of());
 
         private Builder(String id) {
@@ -125,6 +135,7 @@ private Builder(Diagram diagram) {
             this.descriptionId = diagram.getDescriptionId();
             this.nodes = diagram.getNodes();
             this.edges = diagram.getEdges();
+            this.style = diagram.getStyle();
             this.layoutData = diagram.getLayoutData();
         }
 
@@ -148,6 +159,11 @@ public Builder edges(List<Edge> edges) {
             return this;
         }
 
+        public Builder style(DiagramStyle style) {
+            this.style = Objects.requireNonNull(style);
+            return this;
+        }
+
         public Builder layoutData(DiagramLayoutData layoutData) {
             this.layoutData = Objects.requireNonNull(layoutData);
             return this;
@@ -161,6 +177,7 @@ public Diagram build() {
             diagram.descriptionId = Objects.requireNonNull(this.descriptionId);
             diagram.nodes = Objects.requireNonNull(this.nodes);
             diagram.edges = Objects.requireNonNull(this.edges);
+            diagram.style = Objects.requireNonNull(this.style);
             diagram.layoutData = Objects.requireNonNull(this.layoutData);
             return diagram;
         }
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/DiagramStyle.java b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/DiagramStyle.java
new file mode 100644
index 00000000000..67a05a91098
--- /dev/null
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/DiagramStyle.java
@@ -0,0 +1,63 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.diagrams;
+
+import java.util.Objects;
+
+import org.eclipse.sirius.components.annotations.Immutable;
+
+/**
+ * A diagram style.
+ *
+ * @author frouene
+ */
+@Immutable
+public final class DiagramStyle {
+
+    private String background;
+
+    private DiagramStyle() {
+        // prevent initialisation
+    }
+
+    public static Builder newDiagramStyle() {
+        return new Builder();
+    }
+
+    public String getBackground() {
+        return this.background;
+    }
+
+    /**
+     * The builder used to create the diagram style.
+     *
+     * @author frouene
+     */
+    @SuppressWarnings("checkstyle:HiddenField")
+    public static final class Builder {
+
+        private String background = "transparent";
+
+        public Builder background(String background) {
+            this.background = Objects.requireNonNull(background);
+            return this;
+        }
+
+        public DiagramStyle build() {
+            DiagramStyle diagramStyle = new DiagramStyle();
+            diagramStyle.background = Objects.requireNonNull(this.background);
+            return diagramStyle;
+        }
+
+    }
+}
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/components/DiagramComponent.java b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/components/DiagramComponent.java
index 81f28baa0a9..4b4505825b2 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/components/DiagramComponent.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/components/DiagramComponent.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -52,6 +52,7 @@ public Element render() {
 
         String diagramId = optionalPreviousDiagram.map(Diagram::getId).orElseGet(() -> UUID.randomUUID().toString());
         String targetObjectId = diagramDescription.getTargetObjectIdProvider().apply(variableManager);
+        var style = diagramDescription.getStyleProvider().apply(variableManager);
 
         DiagramRenderingCache cache = new DiagramRenderingCache();
 
@@ -107,6 +108,7 @@ public Element render() {
                 .targetObjectId(targetObjectId)
                 .descriptionId(diagramDescription.getId())
                 .children(children)
+                .style(style)
                 .build();
         return new Element(DiagramElementProps.TYPE, diagramElementProps);
     }
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/description/DiagramDescription.java b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/description/DiagramDescription.java
index 213ba5c009d..8c0d2779544 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/description/DiagramDescription.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/description/DiagramDescription.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -21,6 +21,7 @@
 import org.eclipse.sirius.components.annotations.Immutable;
 import org.eclipse.sirius.components.annotations.PublicApi;
 import org.eclipse.sirius.components.diagrams.ArrangeLayoutDirection;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.representations.IRepresentationDescription;
 import org.eclipse.sirius.components.representations.IStatus;
 import org.eclipse.sirius.components.representations.VariableManager;
@@ -85,6 +86,8 @@ public final class DiagramDescription implements IRepresentationDescription {
 
     private Function<VariableManager, List<String>> iconURLsProvider;
 
+    private Function<VariableManager, DiagramStyle> styleProvider;
+
     private DiagramDescription() {
         // Prevent instantiation
     }
@@ -277,6 +280,10 @@ public Function<VariableManager, List<String>> getIconURLsProvider() {
         return this.iconURLsProvider;
     }
 
+    public Function<VariableManager, DiagramStyle> getStyleProvider() {
+        return this.styleProvider;
+    }
+
     @Override
     public String toString() {
         String pattern = "{0} '{'id: {1}, label: {2}, nodeDescriptionCount: {3}, edgeDescriptionCount: {4}'}'";
@@ -315,6 +322,8 @@ public static final class Builder {
 
         private Function<VariableManager, List<String>> iconURLsProvider;
 
+        private Function<VariableManager, DiagramStyle> styleProvider;
+
         private Builder(String id) {
             this.id = Objects.requireNonNull(id);
         }
@@ -332,6 +341,7 @@ private Builder(DiagramDescription diagramDescription) {
             this.dropHandler = diagramDescription.getDropHandler();
             this.dropNodeHandler = diagramDescription.getDropNodeHandler();
             this.iconURLsProvider = diagramDescription.getIconURLsProvider();
+            this.styleProvider = diagramDescription.getStyleProvider();
         }
 
         public Builder label(String label) {
@@ -385,7 +395,12 @@ public Builder dropNodeHandler(Function<VariableManager, IStatus> dropNodeHandle
         }
 
         public Builder iconURLsProvider(Function<VariableManager, List<String>> iconURLsProvider) {
-            this.iconURLsProvider =  Objects.requireNonNull(iconURLsProvider);
+            this.iconURLsProvider = Objects.requireNonNull(iconURLsProvider);
+            return this;
+        }
+
+        public Builder styleProvider(Function<VariableManager, DiagramStyle> styleProvider) {
+            this.styleProvider = Objects.requireNonNull(styleProvider);
             return this;
         }
 
@@ -402,7 +417,8 @@ public DiagramDescription build() {
             diagramDescription.edgeDescriptions = Objects.requireNonNull(this.edgeDescriptions);
             diagramDescription.dropHandler = Objects.requireNonNull(this.dropHandler);
             diagramDescription.dropNodeHandler = this.dropNodeHandler; // Optional on purpose.
-            diagramDescription.iconURLsProvider =  Objects.requireNonNull(this.iconURLsProvider);
+            diagramDescription.iconURLsProvider = Objects.requireNonNull(this.iconURLsProvider);
+            diagramDescription.styleProvider = Objects.requireNonNull(this.styleProvider);
             return diagramDescription;
         }
     }
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/elements/DiagramElementProps.java b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/elements/DiagramElementProps.java
index c5619a8cf79..6c3f8c896a6 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/elements/DiagramElementProps.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/elements/DiagramElementProps.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2024 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -17,6 +17,7 @@
 import java.util.Objects;
 
 import org.eclipse.sirius.components.annotations.Immutable;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.representations.Element;
 import org.eclipse.sirius.components.representations.IProps;
 
@@ -27,6 +28,7 @@
  */
 @Immutable
 public final class DiagramElementProps implements IProps {
+
     public static final String TYPE = "Diagram";
 
     private String id;
@@ -35,6 +37,8 @@ public final class DiagramElementProps implements IProps {
 
     private String descriptionId;
 
+    private DiagramStyle style;
+
     private List<Element> children;
 
     private DiagramElementProps() {
@@ -53,6 +57,10 @@ public String getDescriptionId() {
         return this.descriptionId;
     }
 
+    public DiagramStyle getStyle() {
+        return this.style;
+    }
+
     @Override
     public List<Element> getChildren() {
         return this.children;
@@ -75,12 +83,15 @@ public String toString() {
      */
     @SuppressWarnings("checkstyle:HiddenField")
     public static final class Builder {
-        private String id;
+
+        private final String id;
 
         private String targetObjectId;
 
         private String descriptionId;
 
+        private DiagramStyle style;
+
         private List<Element> children;
 
         private Builder(String id) {
@@ -97,6 +108,11 @@ public Builder descriptionId(String descriptionId) {
             return this;
         }
 
+        public Builder style(DiagramStyle style) {
+            this.style = Objects.requireNonNull(style);
+            return this;
+        }
+
         public Builder children(List<Element> children) {
             this.children = Objects.requireNonNull(children);
             return this;
@@ -108,6 +124,7 @@ public DiagramElementProps build() {
             diagramElementProps.targetObjectId = Objects.requireNonNull(this.targetObjectId);
             diagramElementProps.descriptionId = Objects.requireNonNull(this.descriptionId);
             diagramElementProps.children = Objects.requireNonNull(this.children);
+            diagramElementProps.style = Objects.requireNonNull(this.style);
             return diagramElementProps;
         }
     }
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementFactory.java b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementFactory.java
index 4b33e169895..4e3a49e1792 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementFactory.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/main/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementFactory.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -76,6 +76,7 @@ private Diagram instantiateDiagram(IProps props, List<Object> children) {
                     .descriptionId(diagramElementProps.getDescriptionId())
                     .nodes(nodes)
                     .edges(edges)
+                    .style(diagramElementProps.getStyle())
                     .build();
         }
         return null;
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementChangeVisibilityTests.java b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementChangeVisibilityTests.java
index 9c25f0eb74f..594824aac44 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementChangeVisibilityTests.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramElementChangeVisibilityTests.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2022, 2025 Obeo.
+ * Copyright (c) 2022, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -29,6 +29,7 @@
 
 import org.eclipse.sirius.components.diagrams.ArrowStyle;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.Edge;
 import org.eclipse.sirius.components.diagrams.EdgeStyle;
 import org.eclipse.sirius.components.diagrams.EdgeType;
@@ -195,6 +196,7 @@ private Diagram createDiagram(Optional<Diagram> previousDiagram, List<NodeDescri
                 .edgeDescriptions(edgeDescriptions)
                 .dropHandler(variableManager -> new Failure(""))
                 .iconURLsProvider(variableManager -> List.of())
+                .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
                 .build();
 
         VariableManager variableManager = new VariableManager();
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererEdgeTests.java b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererEdgeTests.java
index 26b3ecc8a98..65c1062660a 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererEdgeTests.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererEdgeTests.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -25,6 +25,7 @@
 
 import org.eclipse.sirius.components.diagrams.ArrowStyle;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.Edge;
 import org.eclipse.sirius.components.diagrams.EdgeStyle;
 import org.eclipse.sirius.components.diagrams.EdgeType;
@@ -151,6 +152,7 @@ private Diagram renderDiagram(List<NodeDescription> nodeDescriptions, List<EdgeD
                 .edgeDescriptions(edgeDescriptions)
                 .dropHandler(variableManager -> new Failure(""))
                 .iconURLsProvider(variableManager -> List.of())
+                .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
                 .build();
 
         VariableManager variableManager = new VariableManager();
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererNodeTests.java b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererNodeTests.java
index 5fac8a5f5a0..631ee037bc7 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererNodeTests.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/DiagramRendererNodeTests.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -22,6 +22,7 @@
 import java.util.function.Function;
 
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.FreeFormLayoutStrategy;
 import org.eclipse.sirius.components.diagrams.HeaderSeparatorDisplayMode;
 import org.eclipse.sirius.components.diagrams.INodeStyle;
@@ -246,6 +247,7 @@ private Diagram createDiagram(Function<VariableManager, INodeStyle> styleProvide
                 .edgeDescriptions(new ArrayList<>())
                 .dropHandler(variableManager -> new Failure(""))
                 .iconURLsProvider(variableManager -> List.of())
+                .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
                 .build();
 
         VariableManager variableManager = new VariableManager();
diff --git a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/UnsynchronizedDiagramTests.java b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/UnsynchronizedDiagramTests.java
index 149c3bf9e16..e2ae6fb2560 100644
--- a/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/UnsynchronizedDiagramTests.java
+++ b/packages/diagrams/backend/sirius-components-diagrams/src/test/java/org/eclipse/sirius/components/diagrams/renderer/UnsynchronizedDiagramTests.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2019, 2025 Obeo.
+ * Copyright (c) 2019, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -21,6 +21,7 @@
 import java.util.function.Function;
 
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.FreeFormLayoutStrategy;
 import org.eclipse.sirius.components.diagrams.HeaderSeparatorDisplayMode;
 import org.eclipse.sirius.components.diagrams.INodeStyle;
@@ -308,9 +309,8 @@ private DiagramDescription getDiagramDescription(Function<VariableManager, List<
                 .childrenLayoutStrategy(new FreeFormLayoutStrategy())
                 .build();
 
-        NodeDescription subUnsynchronizedNodeDescription = NodeDescription.newNodeDescription("subUnsynchronized")
+        NodeDescription subUnsynchronizedNodeDescription = this.getCommonNodeDescriptionBuilder("subUnsynchronized", insideLabelDescription, styleProvider)
                 .synchronizationPolicy(SynchronizationPolicy.UNSYNCHRONIZED)
-                .typeProvider(variableManager -> NODE_TYPE)
                 .semanticElementsProvider(semanticElementsProvider)
                 .targetObjectIdProvider(variableManager -> TARGET_OBJECT_ID)
                 .targetObjectKindProvider(variableManager -> "")
@@ -324,9 +324,8 @@ private DiagramDescription getDiagramDescription(Function<VariableManager, List<
                 .initialChildBorderNodePositions(Map.of())
                 .build();
 
-        NodeDescription unsynchronizedNodeDescription = NodeDescription.newNodeDescription("unsynchronized")
+        NodeDescription unsynchronizedNodeDescription = this.getCommonNodeDescriptionBuilder("unsynchronized", insideLabelDescription, styleProvider)
                 .synchronizationPolicy(SynchronizationPolicy.UNSYNCHRONIZED)
-                .typeProvider(variableManager -> NODE_TYPE)
                 .semanticElementsProvider(semanticElementsProvider)
                 .targetObjectIdProvider(variableManager -> TARGET_OBJECT_ID)
                 .targetObjectKindProvider(variableManager -> "")
@@ -340,9 +339,8 @@ private DiagramDescription getDiagramDescription(Function<VariableManager, List<
                 .initialChildBorderNodePositions(Map.of())
                 .build();
 
-        NodeDescription synchronizedNodeDescription = NodeDescription.newNodeDescription("synchronized")
+        NodeDescription synchronizedNodeDescription = this.getCommonNodeDescriptionBuilder("synchronized", insideLabelDescription, styleProvider)
                 .synchronizationPolicy(SynchronizationPolicy.SYNCHRONIZED)
-                .typeProvider(variableManager -> NODE_TYPE)
                 .semanticElementsProvider(variableManager -> List.of(new Object()))
                 .targetObjectIdProvider(variableManager -> TARGET_OBJECT_ID)
                 .targetObjectKindProvider(variableManager -> "")
@@ -365,6 +363,22 @@ private DiagramDescription getDiagramDescription(Function<VariableManager, List<
                 .edgeDescriptions(List.of())
                 .dropHandler(variableManager -> new Failure(""))
                 .iconURLsProvider(variableManager -> List.of())
+                .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
                 .build();
     }
+
+    private NodeDescription.Builder getCommonNodeDescriptionBuilder(String id,
+            InsideLabelDescription insideLabelDescription, Function<VariableManager, INodeStyle> styleProvider) {
+
+        return NodeDescription.newNodeDescription(id)
+                .typeProvider(variableManager -> NODE_TYPE)
+                .targetObjectIdProvider(variableManager -> TARGET_OBJECT_ID)
+                .targetObjectKindProvider(variableManager -> "")
+                .targetObjectLabelProvider(variableManager -> "")
+                .insideLabelDescription(insideLabelDescription)
+                .styleProvider(styleProvider)
+                .borderNodeDescriptions(new ArrayList<>())
+                .labelEditHandler((variableManager, newLabel) -> new Success())
+                .deleteHandler(variableManager -> new Success());
+    }
 }
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/package.json b/packages/diagrams/frontend/sirius-components-diagrams/package.json
index 356c94f1b0b..6947d0b4108 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/package.json
+++ b/packages/diagrams/frontend/sirius-components-diagrams/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-diagrams",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/converter/convertDiagram.ts b/packages/diagrams/frontend/sirius-components-diagrams/src/converter/convertDiagram.ts
index c79858b315d..0bf1fa26e0e 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/converter/convertDiagram.ts
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/converter/convertDiagram.ts
@@ -316,6 +316,9 @@ export const convertDiagram = (
   computeBorderNodeLabelPosition(rawDiagram.nodes, rawDiagram.edges);
 
   return {
+    style: {
+      background: gqlDiagram.style.background,
+    },
     nodes: rawDiagram.nodes,
     edges: rawDiagram.edges,
   };
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.ts b/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.ts
index 7b97d1b43ca..406b19a2f58 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.ts
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.ts
@@ -23,6 +23,9 @@ fragment diagramFragment on Diagram {
     label
     kind
   }
+  style {
+    background
+  }
   layoutData {
     nodeLayoutData {
       id
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.types.ts b/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.types.ts
index aef3fe8f6a5..16acb40f28e 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.types.ts
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/graphql/subscription/diagramFragment.types.ts
@@ -21,6 +21,7 @@ export interface GQLDiagram {
   metadata: GQLRepresentationMetadata;
   nodes: GQLNode<GQLNodeStyle>[];
   edges: GQLEdge[];
+  style: GQLDiagramStyle;
   layoutData: GQLDiagramLayoutData;
 }
 
@@ -72,3 +73,7 @@ export interface GQLRepresentationMetadata {
   kind: string;
   label: string;
 }
+
+export interface GQLDiagramStyle {
+  background: string;
+}
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.tsx b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.tsx
index cff566160bb..bea4419f9b1 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.tsx
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.tsx
@@ -109,7 +109,7 @@ export const DiagramRenderer = memo(({ diagramRefreshedEventPayload }: DiagramRe
   const { onReconnectEdgeStart, reconnectEdge, onReconnectEdgeEnd } = useReconnectEdge();
   const { onDrop, onDragOver } = useDrop();
   const { onNodesDragStart, onNodesDrag, onNodesDragStop } = useDropNodes();
-  const { backgroundColor, largeGridColor, smallGridColor } = useDropDiagramStyle();
+  const { background, setBackground, largeGridColor, smallGridColor } = useDropDiagramStyle();
   const { nodeTypes } = useNodeType();
   const { setSelection } = useSelection();
 
@@ -267,6 +267,9 @@ export const DiagramRenderer = memo(({ diagramRefreshedEventPayload }: DiagramRe
         }
       );
     }
+    if (convertedDiagram.style.background) {
+      setBackground(String(convertedDiagram.style.background));
+    }
     if (selectionFromTool) {
       setSelection(selectionFromTool);
     }
@@ -468,7 +471,7 @@ export const DiagramRenderer = memo(({ diagramRefreshedEventPayload }: DiagramRe
           <>
             <Background
               id="small-grid"
-              style={{ backgroundColor }}
+              style={{ background }}
               variant={BackgroundVariant.Lines}
               gap={GRID_STEP}
               color={smallGridColor}
@@ -482,7 +485,7 @@ export const DiagramRenderer = memo(({ diagramRefreshedEventPayload }: DiagramRe
             />
           </>
         ) : (
-          <Background style={{ backgroundColor }} color={backgroundColor} />
+          <Background style={{ background }} color="transparent" />
         )}
         {diagramDescription.toolbar ? <DiagramToolbar diagramToolbar={diagramDescription.toolbar} /> : null}
         {isOpened ? (
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.types.ts b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.types.ts
index 8970f444a32..70baf88a811 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.types.ts
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/DiagramRenderer.types.ts
@@ -28,6 +28,7 @@ export interface DiagramRendererProps {
 export interface Diagram {
   nodes: Node<NodeData, DiagramNodeType>[];
   edges: Edge<MultiLabelEdgeData>[];
+  style: React.CSSProperties;
 }
 
 export type OutsideLabelLocation = 'BOTTOM_BEGIN' | 'BOTTOM_MIDDLE' | 'BOTTOM_END';
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.tsx b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.tsx
index df89dd94731..a26a1d71192 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.tsx
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.tsx
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -11,8 +11,9 @@
  *     Obeo - initial API and implementation
  *******************************************************************************/
 
+import { getCSSColor } from '@eclipse-sirius/sirius-components-core';
 import { useTheme } from '@mui/material/styles';
-import { useContext, useMemo } from 'react';
+import { useCallback, useContext, useMemo, useState } from 'react';
 import { useStore } from '../../representation/useStore';
 import { DropNodeContext } from './DropNodeContext';
 import { DropNodeContextValue } from './DropNodeContext.types';
@@ -22,6 +23,7 @@ export const useDropDiagramStyle = (): useDropDiagramStyleValue => {
   const { droppableOnDiagram } = useContext<DropNodeContextValue>(DropNodeContext);
   const { getNodes } = useStore();
   const theme = useTheme();
+  const [background, setBackground] = useState<string>(theme.palette.background.default);
 
   const targetNode = getNodes().find((node) => node.data.isDropNodeTarget);
   const draggedNode = getNodes().find((node) => node.dragging);
@@ -29,15 +31,23 @@ export const useDropDiagramStyle = (): useDropDiagramStyleValue => {
   const diagramTargeted: boolean =
     !!draggedNode && !targetNode && !!draggedNode?.parentId && !draggedNode.data.isBorderNode;
   const diagramForbidden: boolean = diagramTargeted && !!draggedNode?.id !== null && !droppableOnDiagram;
-  const backgroundColor = diagramForbidden ? theme.palette.action.disabledBackground : theme.palette.background.default;
+  const backgroundColor = diagramForbidden ? theme.palette.action.disabledBackground : background;
+
+  const setBackgroundAfterTransformation = useCallback(
+    (newBackground: string) => {
+      setBackground(getCSSColor(newBackground, theme));
+    },
+    [setBackground]
+  );
 
   const memoizedStyle = useMemo(() => {
     return {
-      backgroundColor,
-      smallGridColor: diagramForbidden ? backgroundColor : '#f1f1f1',
-      largeGridColor: diagramForbidden ? backgroundColor : '#cccccc',
+      background: backgroundColor,
+      smallGridColor: diagramForbidden ? 'transparent' : '#f1f1f1',
+      largeGridColor: diagramForbidden ? 'transparent' : '#cccccc',
+      setBackground: setBackgroundAfterTransformation,
     };
-  }, [diagramForbidden]);
+  }, [diagramForbidden, backgroundColor]);
 
   return memoizedStyle;
 };
diff --git a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.types.ts b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.types.ts
index 1887a162bcb..e69188aa3a7 100644
--- a/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.types.ts
+++ b/packages/diagrams/frontend/sirius-components-diagrams/src/renderer/dropNode/useDropDiagramStyle.types.ts
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -12,7 +12,8 @@
  *******************************************************************************/
 
 export interface useDropDiagramStyleValue {
-  backgroundColor: string;
+  background: string;
   smallGridColor: string;
   largeGridColor: string;
+  setBackground: (background: string) => void;
 }
diff --git a/packages/domain/backend/pom.xml b/packages/domain/backend/pom.xml
index cfb6af15b8b..1bf6231a972 100644
--- a/packages/domain/backend/pom.xml
+++ b/packages/domain/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-domain-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-domain-root</name>
 	<description>Sirius Components Domain Root</description>
diff --git a/packages/domain/backend/sirius-components-domain-edit/pom.xml b/packages/domain/backend/sirius-components-domain-edit/pom.xml
index 366e152db09..c8b01b3fabc 100644
--- a/packages/domain/backend/sirius-components-domain-edit/pom.xml
+++ b/packages/domain/backend/sirius-components-domain-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-domain-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-domain-edit</name>
 	<description>Sirius Components Domain Definition DSL - Edit Support</description>
 
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/domain/backend/sirius-components-domain-emf/pom.xml b/packages/domain/backend/sirius-components-domain-emf/pom.xml
index 7c012e4d994..a57ac5097b8 100644
--- a/packages/domain/backend/sirius-components-domain-emf/pom.xml
+++ b/packages/domain/backend/sirius-components-domain-emf/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-domain-emf</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-domain-emf</name>
 	<description>Sirius Components Domain EMF</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -47,13 +47,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/domain/backend/sirius-components-domain/pom.xml b/packages/domain/backend/sirius-components-domain/pom.xml
index 01f8e135ab9..3b56270734b 100644
--- a/packages/domain/backend/sirius-components-domain/pom.xml
+++ b/packages/domain/backend/sirius-components-domain/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-domain</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-domain</name>
 	<description>Sirius Components Domain Definition DSL</description>
 
diff --git a/packages/emf/backend/pom.xml b/packages/emf/backend/pom.xml
index 6edbfc04319..bce38d3d4ba 100644
--- a/packages/emf/backend/pom.xml
+++ b/packages/emf/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-emf-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-emf-root</name>
 	<description>Sirius Components EMF Root</description>
diff --git a/packages/emf/backend/sirius-components-emf-forms/pom.xml b/packages/emf/backend/sirius-components-emf-forms/pom.xml
index d12baa2b507..92b5b62d880 100644
--- a/packages/emf/backend/sirius-components-emf-forms/pom.xml
+++ b/packages/emf/backend/sirius-components-emf-forms/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-emf-forms</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-emf-forms</name>
 	<description>Sirius Components EMF Forms</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -56,13 +56,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/emf/backend/sirius-components-emf-tables/pom.xml b/packages/emf/backend/sirius-components-emf-tables/pom.xml
index 4cad0f9bf8c..dbffcba4f3f 100644
--- a/packages/emf/backend/sirius-components-emf-tables/pom.xml
+++ b/packages/emf/backend/sirius-components-emf-tables/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-emf-tables</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-emf-tables</name>
 	<description>Sirius Components EMF Tables</description>
 
@@ -36,12 +36,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -51,13 +51,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/emf/backend/sirius-components-emf/pom.xml b/packages/emf/backend/sirius-components-emf/pom.xml
index 1916d5f18df..17d3a2197c2 100644
--- a/packages/emf/backend/sirius-components-emf/pom.xml
+++ b/packages/emf/backend/sirius-components-emf/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-emf</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-emf</name>
 	<description>Sirius Components EMF</description>
 
@@ -47,12 +47,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-interpreter</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.emf</groupId>
@@ -96,19 +96,19 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/emf/backend/sirius-components-interpreter/pom.xml b/packages/emf/backend/sirius-components-interpreter/pom.xml
index 8866dc1cd0d..7ab7f6ab921 100644
--- a/packages/emf/backend/sirius-components-interpreter/pom.xml
+++ b/packages/emf/backend/sirius-components-interpreter/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-interpreter</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-interpreter</name>
 	<description>Sirius Components Intepreter</description>
 
@@ -48,7 +48,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.emf</groupId>
diff --git a/packages/formdescriptioneditors/backend/pom.xml b/packages/formdescriptioneditors/backend/pom.xml
index aafdd0ff761..72eb15077a4 100644
--- a/packages/formdescriptioneditors/backend/pom.xml
+++ b/packages/formdescriptioneditors/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-formdescriptioneditors-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-formdescriptioneditors-root</name>
 	<description>Sirius Components FormDescription Editors Root</description>
diff --git a/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-reference/pom.xml b/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-reference/pom.xml
index 3bca2157c5d..60d838b8519 100644
--- a/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-reference/pom.xml
+++ b/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-reference/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-formdescriptioneditors-widget-reference</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-formdescriptioneditors-widget-reference</name>
 	<description>Sirius Components Collaborative FormDescriptionEditors Widget Reference</description>
 
@@ -32,22 +32,22 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -57,7 +57,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-table/pom.xml b/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-table/pom.xml
index ca6f5678653..62d7b334555 100644
--- a/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-table/pom.xml
+++ b/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors-widget-table/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-formdescriptioneditors-widget-table</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-formdescriptioneditors-widget-table</name>
 	<description>Sirius Components Collaborative FormDescriptionEditors Widget Table</description>
 
@@ -32,17 +32,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -52,7 +52,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors/pom.xml b/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors/pom.xml
index 9dba4c9071a..27cac1ab31c 100644
--- a/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors/pom.xml
+++ b/packages/formdescriptioneditors/backend/sirius-components-collaborative-formdescriptioneditors/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-formdescriptioneditors</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-formdescriptioneditors</name>
 	<description>Sirius Components Collaborative FormDescriptionEditors</description>
 
@@ -40,23 +40,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-formdescriptioneditors</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors-graphql/pom.xml b/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors-graphql/pom.xml
index ddf63935d03..1f34e6b9c46 100644
--- a/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors-graphql/pom.xml
+++ b/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-formdescriptioneditors-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-formdescriptioneditors-graphql</name>
 	<description>Sirius Components FormDescription Editors GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors/pom.xml b/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors/pom.xml
index 6da3617f0d3..2f41800f9d8 100644
--- a/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors/pom.xml
+++ b/packages/formdescriptioneditors/backend/sirius-components-formdescriptioneditors/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-formdescriptioneditors</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-formdescriptioneditors</name>
 	<description>Sirius Components FormDescriptionEditors</description>
 
@@ -36,22 +36,22 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -61,7 +61,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/formdescriptioneditors/frontend/sirius-components-formdescriptioneditors/package.json b/packages/formdescriptioneditors/frontend/sirius-components-formdescriptioneditors/package.json
index d533def0716..366e2a0bc6a 100644
--- a/packages/formdescriptioneditors/frontend/sirius-components-formdescriptioneditors/package.json
+++ b/packages/formdescriptioneditors/frontend/sirius-components-formdescriptioneditors/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-formdescriptioneditors",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/forms/backend/pom.xml b/packages/forms/backend/pom.xml
index c1b417dd4c7..0726a4421ef 100644
--- a/packages/forms/backend/pom.xml
+++ b/packages/forms/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-forms-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-forms-root</name>
 	<description>Sirius Components Forms Root</description>
diff --git a/packages/forms/backend/sirius-components-collaborative-forms/pom.xml b/packages/forms/backend/sirius-components-collaborative-forms/pom.xml
index 0c9ab561404..f5da69b5634 100644
--- a/packages/forms/backend/sirius-components-collaborative-forms/pom.xml
+++ b/packages/forms/backend/sirius-components-collaborative-forms/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-forms</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-forms</name>
 	<description>Sirius Components Collaborative Forms</description>
 
@@ -40,38 +40,38 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-charts</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/forms/backend/sirius-components-collaborative-widget-reference/pom.xml b/packages/forms/backend/sirius-components-collaborative-widget-reference/pom.xml
index 23bcc736f7c..dfc6f38182a 100644
--- a/packages/forms/backend/sirius-components-collaborative-widget-reference/pom.xml
+++ b/packages/forms/backend/sirius-components-collaborative-widget-reference/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-widget-reference</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-widget-reference</name>
 	<description>Sirius Components Collaborative Forms :: Reference Widget</description>
 
@@ -40,38 +40,38 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-browser</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/forms/backend/sirius-components-collaborative-widget-table/pom.xml b/packages/forms/backend/sirius-components-collaborative-widget-table/pom.xml
index 33001632425..d4a54be4ad9 100644
--- a/packages/forms/backend/sirius-components-collaborative-widget-table/pom.xml
+++ b/packages/forms/backend/sirius-components-collaborative-widget-table/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-widget-table</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-widget-table</name>
 	<description>Sirius Components Collaborative Forms :: Table Widget</description>
 
@@ -40,23 +40,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/forms/backend/sirius-components-forms-graphql/pom.xml b/packages/forms/backend/sirius-components-forms-graphql/pom.xml
index 8bc86af0a10..6f46f6439a6 100644
--- a/packages/forms/backend/sirius-components-forms-graphql/pom.xml
+++ b/packages/forms/backend/sirius-components-forms-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-forms-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-forms-graphql</name>
 	<description>Sirius Components Forms GraphQL</description>
 
@@ -36,22 +36,22 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/forms/backend/sirius-components-forms-tests/pom.xml b/packages/forms/backend/sirius-components-forms-tests/pom.xml
index 51cb034dd68..240de9650ca 100644
--- a/packages/forms/backend/sirius-components-forms-tests/pom.xml
+++ b/packages/forms/backend/sirius-components-forms-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-forms-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-forms-tests</name>
 	<description>Sirius Components Forms Tests</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.assertj</groupId>
@@ -45,12 +45,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/forms/backend/sirius-components-forms/pom.xml b/packages/forms/backend/sirius-components-forms/pom.xml
index 9f859216b1b..29f37cd47e5 100644
--- a/packages/forms/backend/sirius-components-forms/pom.xml
+++ b/packages/forms/backend/sirius-components-forms/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-forms</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-forms</name>
 	<description>Sirius Components Forms</description>
 
@@ -36,12 +36,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-charts</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -51,7 +51,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/forms/backend/sirius-components-widget-reference-graphql/pom.xml b/packages/forms/backend/sirius-components-widget-reference-graphql/pom.xml
index 2e55359b34e..c0a88f36537 100644
--- a/packages/forms/backend/sirius-components-widget-reference-graphql/pom.xml
+++ b/packages/forms/backend/sirius-components-widget-reference-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-reference-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-reference-graphql</name>
 	<description>Sirius Components Reference Widget GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/forms/backend/sirius-components-widget-reference-tests/pom.xml b/packages/forms/backend/sirius-components-widget-reference-tests/pom.xml
index d9610e8d2a9..6e0475b7830 100644
--- a/packages/forms/backend/sirius-components-widget-reference-tests/pom.xml
+++ b/packages/forms/backend/sirius-components-widget-reference-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-reference-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-reference-tests</name>
 	<description>Sirius Components Widget Reference Tests</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.assertj</groupId>
@@ -41,12 +41,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/forms/backend/sirius-components-widget-reference/pom.xml b/packages/forms/backend/sirius-components-widget-reference/pom.xml
index a4828dd7040..0e79c1a2486 100644
--- a/packages/forms/backend/sirius-components-widget-reference/pom.xml
+++ b/packages/forms/backend/sirius-components-widget-reference/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-reference</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-reference</name>
 	<description>Sirius Components Forms :: Reference Widget</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/forms/backend/sirius-components-widget-table/pom.xml b/packages/forms/backend/sirius-components-widget-table/pom.xml
index 7423c4df635..e30590a49a8 100644
--- a/packages/forms/backend/sirius-components-widget-table/pom.xml
+++ b/packages/forms/backend/sirius-components-widget-table/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-table</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-table</name>
 	<description>Sirius Components Forms :: Table Widget</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -47,7 +47,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/forms/frontend/sirius-components-forms/package.json b/packages/forms/frontend/sirius-components-forms/package.json
index afcb83ce7a3..7d930a60801 100644
--- a/packages/forms/frontend/sirius-components-forms/package.json
+++ b/packages/forms/frontend/sirius-components-forms/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-forms",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/forms/frontend/sirius-components-widget-reference/package.json b/packages/forms/frontend/sirius-components-widget-reference/package.json
index 5fbc286f387..9684b990b09 100644
--- a/packages/forms/frontend/sirius-components-widget-reference/package.json
+++ b/packages/forms/frontend/sirius-components-widget-reference/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-widget-reference",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/forms/frontend/sirius-components-widget-table/package.json b/packages/forms/frontend/sirius-components-widget-table/package.json
index 302ca59571c..d3815043921 100644
--- a/packages/forms/frontend/sirius-components-widget-table/package.json
+++ b/packages/forms/frontend/sirius-components-widget-table/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-widget-table",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/gantt/backend/pom.xml b/packages/gantt/backend/pom.xml
index 14368067f74..1b95fd95f25 100644
--- a/packages/gantt/backend/pom.xml
+++ b/packages/gantt/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-gantt-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-gantt-root</name>
 	<description>Sirius Components Gantt Root</description>
diff --git a/packages/gantt/backend/sirius-components-collaborative-gantt/pom.xml b/packages/gantt/backend/sirius-components-collaborative-gantt/pom.xml
index d3e0ab15f25..d86f5b003bd 100644
--- a/packages/gantt/backend/sirius-components-collaborative-gantt/pom.xml
+++ b/packages/gantt/backend/sirius-components-collaborative-gantt/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-gantt</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-gantt</name>
 	<description>Sirius Components Collaborative gantt</description>
 
@@ -40,23 +40,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/gantt/backend/sirius-components-gantt-graphql/pom.xml b/packages/gantt/backend/sirius-components-gantt-graphql/pom.xml
index 931ca66de3d..4593913f58f 100644
--- a/packages/gantt/backend/sirius-components-gantt-graphql/pom.xml
+++ b/packages/gantt/backend/sirius-components-gantt-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-gantt-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-gantt-graphql</name>
 	<description>Sirius Components Gantt GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/gantt/backend/sirius-components-gantt-tests/pom.xml b/packages/gantt/backend/sirius-components-gantt-tests/pom.xml
index da5fa56921c..bad60f15370 100644
--- a/packages/gantt/backend/sirius-components-gantt-tests/pom.xml
+++ b/packages/gantt/backend/sirius-components-gantt-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-gantt-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-gantt-tests</name>
 	<description>Sirius Components Gantt Tests</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.assertj</groupId>
@@ -45,12 +45,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/gantt/backend/sirius-components-gantt/pom.xml b/packages/gantt/backend/sirius-components-gantt/pom.xml
index 817c22340b6..ea1cc3c3946 100644
--- a/packages/gantt/backend/sirius-components-gantt/pom.xml
+++ b/packages/gantt/backend/sirius-components-gantt/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-gantt</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-gantt</name>
 	<description>Sirius Components Gantt</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/gantt/frontend/sirius-components-gantt/package.json b/packages/gantt/frontend/sirius-components-gantt/package.json
index 1e643bcf4f3..32bcc12a2bb 100644
--- a/packages/gantt/frontend/sirius-components-gantt/package.json
+++ b/packages/gantt/frontend/sirius-components-gantt/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-gantt",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/palette/frontend/sirius-components-palette/package.json b/packages/palette/frontend/sirius-components-palette/package.json
index 7e528aaacbd..f4204a7ddce 100644
--- a/packages/palette/frontend/sirius-components-palette/package.json
+++ b/packages/palette/frontend/sirius-components-palette/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-palette",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/papaya/backend/pom.xml b/packages/papaya/backend/pom.xml
index 12c5143c12e..2efa8a4de16 100644
--- a/packages/papaya/backend/pom.xml
+++ b/packages/papaya/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-papaya-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-view-root</name>
 	<description>Sirius Components Papaya Root</description>
diff --git a/packages/papaya/backend/sirius-components-papaya-edit/pom.xml b/packages/papaya/backend/sirius-components-papaya-edit/pom.xml
index 780377bb8bd..5d7b4492eec 100644
--- a/packages/papaya/backend/sirius-components-papaya-edit/pom.xml
+++ b/packages/papaya/backend/sirius-components-papaya-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-papaya-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-papaya-edit</name>
 	<description>Sirius Components Papaya Definition DSL - Edit Support</description>
 
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-papaya</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/papaya/backend/sirius-components-papaya/pom.xml b/packages/papaya/backend/sirius-components-papaya/pom.xml
index c144958fec8..c8fc848e954 100644
--- a/packages/papaya/backend/sirius-components-papaya/pom.xml
+++ b/packages/papaya/backend/sirius-components-papaya/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-papaya</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-papaya</name>
 	<description>Sirius Components Papaya Definition DSL</description>
 
diff --git a/packages/pom.xml b/packages/pom.xml
index 8122b734331..e7ee2e5296c 100644
--- a/packages/pom.xml
+++ b/packages/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components</name>
 	<description>Sirius Components</description>
diff --git a/packages/portals/backend/pom.xml b/packages/portals/backend/pom.xml
index 28d8572049a..2b601d3bd75 100644
--- a/packages/portals/backend/pom.xml
+++ b/packages/portals/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-portals-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-portals-root</name>
 	<description>Sirius Components Portals Root</description>
diff --git a/packages/portals/backend/sirius-components-collaborative-portals/pom.xml b/packages/portals/backend/sirius-components-collaborative-portals/pom.xml
index 6fe995a3fcd..df3ed15db90 100644
--- a/packages/portals/backend/sirius-components-collaborative-portals/pom.xml
+++ b/packages/portals/backend/sirius-components-collaborative-portals/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-portals</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-portals</name>
 	<description>Sirius Components Collaborative Portals</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-portals</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
@@ -54,13 +54,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/portals/backend/sirius-components-portals-graphql/pom.xml b/packages/portals/backend/sirius-components-portals-graphql/pom.xml
index 220e76ccc71..759fa464492 100644
--- a/packages/portals/backend/sirius-components-portals-graphql/pom.xml
+++ b/packages/portals/backend/sirius-components-portals-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-portals-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-portals-graphql</name>
 	<description>Sirius Components Portals GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-portals</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/portals/backend/sirius-components-portals-tests/pom.xml b/packages/portals/backend/sirius-components-portals-tests/pom.xml
index 2565a4499fc..65aa369a2a9 100644
--- a/packages/portals/backend/sirius-components-portals-tests/pom.xml
+++ b/packages/portals/backend/sirius-components-portals-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-portals-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-portals-tests</name>
 	<description>Sirius Components Portals Tests</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-portals</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/portals/backend/sirius-components-portals/pom.xml b/packages/portals/backend/sirius-components-portals/pom.xml
index a72f9387560..00e308bbe93 100644
--- a/packages/portals/backend/sirius-components-portals/pom.xml
+++ b/packages/portals/backend/sirius-components-portals/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-portals</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-portals</name>
 	<description>Sirius Components Portals</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/portals/frontend/sirius-components-portals/package.json b/packages/portals/frontend/sirius-components-portals/package.json
index 61a925a9d93..6474b7fd4e0 100644
--- a/packages/portals/frontend/sirius-components-portals/package.json
+++ b/packages/portals/frontend/sirius-components-portals/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-portals",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/releng/backend/pom.xml b/packages/releng/backend/pom.xml
index d0c64a1df75..c76261223b1 100644
--- a/packages/releng/backend/pom.xml
+++ b/packages/releng/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-releng-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-releng-root</name>
 	<description>Sirius Components Releng Root</description>
diff --git a/packages/releng/backend/sirius-components-test-coverage/pom.xml b/packages/releng/backend/sirius-components-test-coverage/pom.xml
index 12351f11058..ac27b088aa8 100644
--- a/packages/releng/backend/sirius-components-test-coverage/pom.xml
+++ b/packages/releng/backend/sirius-components-test-coverage/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-test-coverage</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-test-coverage-aggregation</name>
 	<description>Sirius Components Test Coverage Aggregation</description>
 
@@ -44,417 +44,417 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-annotations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-annotations-spring</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-events</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-charts</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-formdescriptioneditors</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-interpreter</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-portals</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-selection</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-web</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-browser</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-charts</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-portals</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-selection</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-validation</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-browser-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-formdescriptioneditors-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-gantt-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-charts-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-deck-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-selection-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-portals-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-trees-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-validation-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-validation</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-builder</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-task</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-task-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-customnodes</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-customnodes-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-datatree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-papaya</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-application</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-infrastructure</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-starter</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/releng/backend/sirius-web-parent/pom.xml b/packages/releng/backend/sirius-web-parent/pom.xml
index 6dfadd70f02..92d80952bd3 100644
--- a/packages/releng/backend/sirius-web-parent/pom.xml
+++ b/packages/releng/backend/sirius-web-parent/pom.xml
@@ -25,7 +25,7 @@
 
     <groupId>org.eclipse.sirius</groupId>
     <artifactId>sirius-web-parent</artifactId>
-    <version>2026.1.6</version>
+    <version>2026.3.0</version>
     <packaging>pom</packaging>
     <name>sirius-web-parent</name>
     <description>Sirius Web Parent</description>
diff --git a/packages/releng/frontend/sirius-components-tsconfig/package.json b/packages/releng/frontend/sirius-components-tsconfig/package.json
index 0a6924b1604..73c744943c6 100644
--- a/packages/releng/frontend/sirius-components-tsconfig/package.json
+++ b/packages/releng/frontend/sirius-components-tsconfig/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-tsconfig",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/selection/backend/pom.xml b/packages/selection/backend/pom.xml
index d2fb07e9153..fc9e16a32f4 100644
--- a/packages/selection/backend/pom.xml
+++ b/packages/selection/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-selection-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-selection-root</name>
 	<description>Sirius Components Selection Root</description>
diff --git a/packages/selection/backend/sirius-components-collaborative-selection/pom.xml b/packages/selection/backend/sirius-components-collaborative-selection/pom.xml
index a14485c4f06..9b1d1c90f39 100644
--- a/packages/selection/backend/sirius-components-collaborative-selection/pom.xml
+++ b/packages/selection/backend/sirius-components-collaborative-selection/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-selection</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-selection</name>
 	<description>Sirius Components Collaborative Selection</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-selection</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
@@ -45,18 +45,18 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -67,7 +67,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/selection/backend/sirius-components-selection-graphql/pom.xml b/packages/selection/backend/sirius-components-selection-graphql/pom.xml
index 83ba112f75d..c07dcfb7def 100644
--- a/packages/selection/backend/sirius-components-selection-graphql/pom.xml
+++ b/packages/selection/backend/sirius-components-selection-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-selection-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-selection-graphql</name>
 	<description>Sirius Components Selection GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-selection</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/selection/backend/sirius-components-selection/pom.xml b/packages/selection/backend/sirius-components-selection/pom.xml
index 134f81295aa..ac47260cec6 100644
--- a/packages/selection/backend/sirius-components-selection/pom.xml
+++ b/packages/selection/backend/sirius-components-selection/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-selection</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-selection</name>
 	<description>Sirius Components Selection</description>
 
@@ -32,18 +32,18 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/selection/frontend/sirius-components-selection/package.json b/packages/selection/frontend/sirius-components-selection/package.json
index ce700e32bb8..02e1a286aa3 100644
--- a/packages/selection/frontend/sirius-components-selection/package.json
+++ b/packages/selection/frontend/sirius-components-selection/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-selection",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/sirius-web/backend/pom.xml b/packages/sirius-web/backend/pom.xml
index 79d96d4c637..e4c99b6fc39 100644
--- a/packages/sirius-web/backend/pom.xml
+++ b/packages/sirius-web/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-web-root</name>
 	<description>Sirius Web Root</description>
diff --git a/packages/sirius-web/backend/sirius-web-application/pom.xml b/packages/sirius-web/backend/sirius-web-application/pom.xml
index 7650114900a..b1d6c659405 100644
--- a/packages/sirius-web/backend/sirius-web-application/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-application/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-application</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-application</name>
 	<description>Sirius Web Application</description>
 
@@ -36,212 +36,212 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-browser</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-portals</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-validation</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-customnodes</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-customnodes-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-builder</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-customcells</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-customcells-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-datatree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.emf</groupId>
@@ -261,13 +261,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/editingcontext/migration/participants/DiagramStyleDescriptionAddMigrationParticipant.java b/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/editingcontext/migration/participants/DiagramStyleDescriptionAddMigrationParticipant.java
new file mode 100644
index 00000000000..00178ff07ed
--- /dev/null
+++ b/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/editingcontext/migration/participants/DiagramStyleDescriptionAddMigrationParticipant.java
@@ -0,0 +1,45 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.editingcontext.migration.participants;
+
+import com.google.gson.JsonObject;
+
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.sirius.components.emf.migration.api.IMigrationParticipant;
+import org.eclipse.sirius.components.view.diagram.DiagramDescription;
+import org.eclipse.sirius.components.view.diagram.DiagramPackage;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
+import org.eclipse.sirius.emfjson.resource.JsonResource;
+import org.springframework.stereotype.Service;
+
+/**
+ * MigrationParticipant that add the DiagramStyle of DiagramDescription.
+ *
+ * @author frouene
+ */
+@Service
+public class DiagramStyleDescriptionAddMigrationParticipant implements IMigrationParticipant {
+
+    @Override
+    public String getVersion() {
+        return "2026.5.0-202603171430";
+    }
+
+    @Override
+    public void postObjectLoading(JsonResource resource, EObject eObject, JsonObject jsonObject) {
+        if (eObject instanceof DiagramDescription diagramDescription && diagramDescription.getStyle() == null) {
+            DiagramStyleDescription diagramStyleDescription = DiagramPackage.eINSTANCE.getDiagramFactory().createDiagramStyleDescription();
+            diagramDescription.setStyle(diagramStyleDescription);
+        }
+    }
+}
diff --git a/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/DefaultViewResourceProvider.java b/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/DefaultViewResourceProvider.java
index 7368d80c17b..6b6722dc885 100644
--- a/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/DefaultViewResourceProvider.java
+++ b/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/DefaultViewResourceProvider.java
@@ -75,6 +75,7 @@ public Resource getResource(String domainName) {
         viewDiagramDescription.setDomainType(domainName + "::Root");
         viewDiagramDescription.setTitleExpression(domainName + " diagram");
         viewDiagramDescription.setPalette(defaultToolsFactory.createDefaultDiagramPalette());
+        viewDiagramDescription.setStyle(DiagramFactory.eINSTANCE.createDiagramStyleDescription());
         view.getDescriptions().add(viewDiagramDescription);
 
         view.getColorPalettes().add(this.createColorPalette());
diff --git a/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/representations/DomainDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/representations/DomainDiagramDescriptionProvider.java
index 4b63e1e6c0c..e24fb99c931 100644
--- a/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/representations/DomainDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web-application/src/main/java/org/eclipse/sirius/web/application/studio/services/representations/DomainDiagramDescriptionProvider.java
@@ -188,6 +188,8 @@ private DiagramDescription domainDiagramDescription() {
             .expandedByDefault(true)
             .build();
 
+        var style = new DiagramBuilders().newDiagramStyleDescription().build();
+
         var diagramDescription = new DiagramBuilders()
                 .newDiagramDescription()
                 .name("Domain")
@@ -196,6 +198,7 @@ private DiagramDescription domainDiagramDescription() {
                 .palette(palette)
                 .toolbar(toolbar)
                 .arrangeLayoutDirection(ArrangeLayoutDirection.DOWN)
+                .style(style)
                 .build();
 
         return diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web-domain/pom.xml b/packages/sirius-web/backend/sirius-web-domain/pom.xml
index 96b00e8d1e1..8cad2dacbbc 100644
--- a/packages/sirius-web/backend/sirius-web-domain/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-domain/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-domain</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-domain</name>
 	<description>Sirius Web Domain</description>
 
@@ -44,12 +44,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-annotations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-events</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.jmolecules</groupId>
@@ -67,13 +67,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/pom.xml b/packages/sirius-web/backend/sirius-web-e2e-tests/pom.xml
index bbd85db8fb7..cb866b89051 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-e2e-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-e2e-tests</name>
 	<description>Sirius Web End-to-end Tests</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-application</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-papaya</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeHandlePositionViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeHandlePositionViewProvider.java
index b11032d0429..eeb34d7a717 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeHandlePositionViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeHandlePositionViewProvider.java
@@ -82,8 +82,8 @@ private DiagramDescription createDiagramDescription(IColorProvider colorProvider
         var edgeDescription1 = this.getEdgeDescription(colorProvider, nodeDescription1, nodeDescription2);
 
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -95,6 +95,7 @@ private DiagramDescription createDiagramDescription(IColorProvider colorProvider
                 .nodeDescriptions(nodeDescription1, nodeDescription2)
                 .edgeDescriptions(edgeDescription1)
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeIconLabelViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeIconLabelViewProvider.java
index edac184f6d3..4222bdda28d 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeIconLabelViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeIconLabelViewProvider.java
@@ -90,6 +90,7 @@ private DiagramDescription createDiagramDescription(IColorProvider colorProvider
                 .autoLayout(false)
                 .nodeDescriptions(nodeDescription1, nodeDescription2)
                 .edgeDescriptions(edgeDescription1)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeOnBorderNodeViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeOnBorderNodeViewProvider.java
index 26fcf09c802..deac8bd295a 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeOnBorderNodeViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeOnBorderNodeViewProvider.java
@@ -83,8 +83,8 @@ private DiagramDescription createDiagramDescription(IColorProvider colorProvider
         var edgeDescription1 = this.getEdgeDescription(colorProvider, nodeDescription2, nodeDescription2);
 
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -96,6 +96,7 @@ private DiagramDescription createDiagramDescription(IColorProvider colorProvider
                 .nodeDescriptions(nodeDescription1, nodeDescription2)
                 .edgeDescriptions(edgeDescription1)
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeViewProvider.java
index 398d53b6674..a33d8ea04fd 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramEdge/DiagramEdgeViewProvider.java
@@ -111,8 +111,8 @@ private DiagramDescription createDiagramDescription(IColorProvider colorProvider
         ).build());
 
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -124,6 +124,7 @@ private DiagramDescription createDiagramDescription(IColorProvider colorProvider
                 .nodeDescriptions(nodeDescription1, nodeDescription2)
                 .edgeDescriptions(edgeDescription1, edgeDescription2, edgeDescription3, edgeDescription4, edgeDescription5)
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeViewProvider.java
index 8245216919d..3bf31f8fee4 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeViewProvider.java
@@ -79,8 +79,8 @@ public List<View> createViews() {
 
     private DiagramDescription diagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -95,6 +95,7 @@ private DiagramDescription diagramDescription(IColorProvider colorProvider) {
                         this.getNodeDescription(colorProvider, "Entity4 - Resize VERTICAL", "::Entity4", UserResizableDirection.VERTICAL),
                         this.getNodeDescriptionWithDefaultSize(colorProvider, "Entity5 - Resize Both - default size: (200, 100)", "::Entity5", UserResizableDirection.BOTH, "200", "100"))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeWithSameSemanticElementViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeWithSameSemanticElementViewProvider.java
index 444e96a3021..783a581fc52 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeWithSameSemanticElementViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramResize/DiagramResizeWithSameSemanticElementViewProvider.java
@@ -85,6 +85,7 @@ private DiagramDescription diagramDescription(IColorProvider colorProvider) {
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider).build())
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrambordernode/DiagramBorderNodeViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrambordernode/DiagramBorderNodeViewProvider.java
index c424921c660..017502cfe81 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrambordernode/DiagramBorderNodeViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrambordernode/DiagramBorderNodeViewProvider.java
@@ -79,8 +79,8 @@ public List<View> createViews() {
 
     private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -91,6 +91,7 @@ private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvi
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramdnd/DiagramDnDViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramdnd/DiagramDnDViewProvider.java
index d8658ab8c36..ead5d00bc76 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramdnd/DiagramDnDViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramdnd/DiagramDnDViewProvider.java
@@ -110,8 +110,8 @@ private DiagramDescription getDiagramDescription(IColorProvider colorProvider) {
                 .build();
 
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -126,6 +126,7 @@ private DiagramDescription getDiagramDescription(IColorProvider colorProvider) {
                         .dropNodeTool(dropEntity2Tool)
                         .build())
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlabel/DiagramLabelViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlabel/DiagramLabelViewProvider.java
index 1c4b8b942d2..ee3764978fb 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlabel/DiagramLabelViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlabel/DiagramLabelViewProvider.java
@@ -84,8 +84,8 @@ public List<View> createViews() {
 
     private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -97,13 +97,14 @@ private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvi
                 .palette(this.getDiagramPalette())
                 .nodeDescriptions(this.getNodeDescription(colorProvider, LabelOverflowStrategy.NONE))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
     private DiagramDescription wrapLabelWithoutChangingNodeWidthDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -115,13 +116,14 @@ private DiagramDescription wrapLabelWithoutChangingNodeWidthDiagramDescription(I
                 .palette(this.getDiagramPalette())
                 .nodeDescriptions(this.getNodeDescription(colorProvider, LabelOverflowStrategy.WRAP))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
     private DiagramDescription labelIsTruncatedWithoutChangingNodeWidthDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -133,6 +135,7 @@ private DiagramDescription labelIsTruncatedWithoutChangingNodeWidthDiagramDescri
                 .palette(this.getDiagramPalette())
                 .nodeDescriptions(this.getNodeDescription(colorProvider, LabelOverflowStrategy.ELLIPSIS))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramGrowableListViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramGrowableListViewProvider.java
index 603a9860ade..7d376cdecde 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramGrowableListViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramGrowableListViewProvider.java
@@ -81,8 +81,8 @@ public List<View> createViews() {
 
     private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -93,6 +93,7 @@ private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvi
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramListViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramListViewProvider.java
index 68e573299a4..ac9609625ea 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramListViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramListViewProvider.java
@@ -78,8 +78,8 @@ public List<View> createViews() {
 
     private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -90,6 +90,7 @@ private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvi
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramSubNodeListViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramSubNodeListViewProvider.java
index 5cd90343bfb..6f460a8466f 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramSubNodeListViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramlist/DiagramSubNodeListViewProvider.java
@@ -77,8 +77,8 @@ public List<View> createViews() {
 
     private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -89,6 +89,7 @@ private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvi
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramnodecreation/DiagramNodeCreationViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramnodecreation/DiagramNodeCreationViewProvider.java
index 3896284c20c..54662443e1c 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramnodecreation/DiagramNodeCreationViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramnodecreation/DiagramNodeCreationViewProvider.java
@@ -116,8 +116,8 @@ private DiagramDescription gegtDiagramDescription(IColorProvider colorProvider)
                 .build());
 
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -129,6 +129,7 @@ private DiagramDescription gegtDiagramDescription(IColorProvider colorProvider)
                 .nodeDescriptions(nodeDescription1, nodeDescription2, this.getNode3Description(colorProvider))
                 .edgeDescriptions(edgeDescription)
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .palette(new DiagramBuilders().newDiagramPalette()
                         .nodeTools(new DiagramBuilders().newNodeTool()
                                 .name("create nodes")
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrampalette/DiagramPaletteViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrampalette/DiagramPaletteViewProvider.java
index 3f83c5d994d..8842acd7a0c 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrampalette/DiagramPaletteViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagrampalette/DiagramPaletteViewProvider.java
@@ -75,8 +75,8 @@ public List<View> createViews() {
 
     private DiagramDescription getDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -87,6 +87,7 @@ private DiagramDescription getDiagramDescription(IColorProvider colorProvider) {
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .palette(new DiagramBuilders().newDiagramPalette()
                         .toolSections(new DiagramBuilders().newDiagramToolSection()
                                         .name("DiagramToolSection")
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramselfcontained/DiagramSelfContainedViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramselfcontained/DiagramSelfContainedViewProvider.java
index 8daebfcb5d3..70df29594ac 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramselfcontained/DiagramSelfContainedViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramselfcontained/DiagramSelfContainedViewProvider.java
@@ -75,8 +75,8 @@ public List<View> createViews() {
 
     private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -87,6 +87,7 @@ private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvi
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramtoolbar/DiagramToolbarViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramtoolbar/DiagramToolbarViewProvider.java
index 1cbf46fbb7d..cbcff9dcd6e 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramtoolbar/DiagramToolbarViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/diagramtoolbar/DiagramToolbarViewProvider.java
@@ -79,8 +79,8 @@ public List<View> createViews() {
 
     private DiagramDescription getDiagramDescriptionWithToolbar(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -91,24 +91,26 @@ private DiagramDescription getDiagramDescriptionWithToolbar(IColorProvider color
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
     private DiagramDescription getDiagramDescriptionWithCollapsedToolbar(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(false)
-            .build();
+                .expandedByDefault(false)
+                .build();
 
         return new DiagramBuilders()
-            .newDiagramDescription()
-            .name(DiagramToolbarDomainProvider.DOMAIN_NAME + " - with collapsed toolbar")
-            .domainType(DiagramToolbarDomainProvider.DOMAIN_NAME + "::Root")
-            .titleExpression(DiagramToolbarDomainProvider.DOMAIN_NAME + " diagram")
-            .autoLayout(false)
-            .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
-            .nodeDescriptions(this.getNodeDescription(colorProvider))
-            .toolbar(toolbar)
-            .build();
+                .newDiagramDescription()
+                .name(DiagramToolbarDomainProvider.DOMAIN_NAME + " - with collapsed toolbar")
+                .domainType(DiagramToolbarDomainProvider.DOMAIN_NAME + "::Root")
+                .titleExpression(DiagramToolbarDomainProvider.DOMAIN_NAME + " diagram")
+                .autoLayout(false)
+                .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
+                .nodeDescriptions(this.getNodeDescription(colorProvider))
+                .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
+                .build();
     }
 
     private DiagramDescription getDiagramDescriptionWithoutToolbar(IColorProvider colorProvider) {
@@ -120,6 +122,7 @@ private DiagramDescription getDiagramDescriptionWithoutToolbar(IColorProvider co
                 .autoLayout(false)
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/impactanalysis/DiagramImpactAnalysisViewProvider.java b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/impactanalysis/DiagramImpactAnalysisViewProvider.java
index 14f53dbfc0e..96b5c655acd 100644
--- a/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/impactanalysis/DiagramImpactAnalysisViewProvider.java
+++ b/packages/sirius-web/backend/sirius-web-e2e-tests/src/main/java/org/eclipse/sirius/web/e2e/tests/impactanalysis/DiagramImpactAnalysisViewProvider.java
@@ -78,8 +78,8 @@ public List<View> createViews() {
 
     private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvider colorProvider) {
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         return new DiagramBuilders()
                 .newDiagramDescription()
@@ -90,6 +90,7 @@ private DiagramDescription fullyDisplayInsideLabelDiagramDescription(IColorProvi
                 .arrangeLayoutDirection(ArrangeLayoutDirection.UNDEFINED)
                 .nodeDescriptions(this.getNodeDescription(colorProvider))
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-frontend/pom.xml b/packages/sirius-web/backend/sirius-web-frontend/pom.xml
index eb0bd18bca7..20488ded6db 100644
--- a/packages/sirius-web/backend/sirius-web-frontend/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-frontend/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-frontend</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-frontend</name>
 	<description>Sirius Web Frontend</description>
 
diff --git a/packages/sirius-web/backend/sirius-web-infrastructure/pom.xml b/packages/sirius-web/backend/sirius-web-infrastructure/pom.xml
index e87128169ad..a1c896a7f3a 100644
--- a/packages/sirius-web/backend/sirius-web-infrastructure/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-infrastructure/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-infrastructure</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-infrastructure</name>
 	<description>Sirius Web Infrastructure</description>
 
@@ -45,7 +45,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-application</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springdoc</groupId>
@@ -56,13 +56,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/sirius-web/backend/sirius-web-papaya/pom.xml b/packages/sirius-web/backend/sirius-web-papaya/pom.xml
index 79b892254f9..1d2b3204e77 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-papaya/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-papaya</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-papaya</name>
 	<description>Sirius Web Papaya</description>
 
@@ -32,17 +32,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-application</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-papaya</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-papaya-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.reflections</groupId>
diff --git a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/classdiagram/ClassDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/classdiagram/ClassDiagramDescriptionProvider.java
index d2dc48d8992..c9d4250a1e3 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/classdiagram/ClassDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/classdiagram/ClassDiagramDescriptionProvider.java
@@ -16,6 +16,7 @@
 
 import org.eclipse.sirius.components.view.RepresentationDescription;
 import org.eclipse.sirius.components.view.builder.DefaultViewDiagramElementFinder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.providers.IColorProvider;
 import org.eclipse.sirius.components.view.builder.providers.IDiagramElementDescriptionProvider;
 import org.eclipse.sirius.components.view.builder.providers.IRepresentationDescriptionProvider;
@@ -31,6 +32,7 @@
 import org.eclipse.sirius.web.papaya.representations.classdiagram.nodedescriptions.InterfaceNodeDescriptionProvider;
 import org.eclipse.sirius.web.papaya.representations.classdiagram.nodedescriptions.RecordNodeDescriptionProvider;
 import org.eclipse.sirius.web.papaya.representations.classdiagram.tools.diagram.DiagramPaletteProvider;
+import org.eclipse.sirius.web.papaya.services.PapayaColorPaletteProvider;
 
 /**
  * Used to provide the view model used to create class diagrams.
@@ -52,6 +54,18 @@ public RepresentationDescription create(IColorProvider colorProvider) {
         classDiagramDescription.setIconExpression("aql:'/papaya-representations/class-diagram.svg'");
         classDiagramDescription.setDescription("Represents a simplified Class Diagram. It can display classes, records, interfaces or enums. It can also represent the relationships between them.");
 
+        classDiagramDescription.setStyle(new DiagramBuilders().newDiagramStyleDescription()
+                .background(colorProvider.getColor(PapayaColorPaletteProvider.BACKGROUND))
+                .build());
+
+        var emptyDiagramStyle = new DiagramBuilders().newConditionalDiagramStyle()
+                .condition("aql:diagramContext.isDiagramEmpty()")
+                .style(new DiagramBuilders().newDiagramStyleDescription()
+                        .background(colorProvider.getColor(PapayaColorPaletteProvider.EMPTY_DIAGRAM_BACKGROUND))
+                        .build())
+                .build();
+        classDiagramDescription.getConditionalStyles().add(emptyDiagramStyle);
+
         var toolbar = DiagramFactory.eINSTANCE.createDiagramToolbar();
         toolbar.setExpandedByDefault(true);
 
diff --git a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/componentdiagram/ComponentDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/componentdiagram/ComponentDiagramDescriptionProvider.java
index e22d561f61d..fee8e20ca40 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/componentdiagram/ComponentDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/componentdiagram/ComponentDiagramDescriptionProvider.java
@@ -29,6 +29,7 @@
 import org.eclipse.sirius.web.papaya.representations.componentdiagram.nodedescriptions.ComponentNodeDescriptionProvider;
 import org.eclipse.sirius.web.papaya.representations.componentdiagram.tools.ComponentDiagramDropToolProvider;
 import org.eclipse.sirius.web.papaya.representations.componentdiagram.tools.CreateComponentNodeToolProvider;
+import org.eclipse.sirius.web.papaya.services.PapayaColorPaletteProvider;
 
 /**
  * Used to provide the view model used to create component diagrams.
@@ -48,6 +49,17 @@ public RepresentationDescription create(IColorProvider colorProvider) {
         componentDiagramDescription.setAutoLayout(false);
         componentDiagramDescription.setArrangeLayoutDirection(ArrangeLayoutDirection.DOWN);
         componentDiagramDescription.setIconExpression("aql:'/papaya-representations/component-diagram.svg'");
+        componentDiagramDescription.setStyle(new DiagramBuilders().newDiagramStyleDescription()
+                .background(colorProvider.getColor(PapayaColorPaletteProvider.BACKGROUND))
+                .build());
+
+        var emptyDiagramStyle = new DiagramBuilders().newConditionalDiagramStyle()
+                .condition("aql:diagramContext.isDiagramEmpty()")
+                .style(new DiagramBuilders().newDiagramStyleDescription()
+                        .background(colorProvider.getColor(PapayaColorPaletteProvider.EMPTY_DIAGRAM_BACKGROUND))
+                        .build())
+                .build();
+        componentDiagramDescription.getConditionalStyles().add(emptyDiagramStyle);
 
         var toolbar = DiagramFactory.eINSTANCE.createDiagramToolbar();
         toolbar.setExpandedByDefault(true);
diff --git a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/PapayaDashboardDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/PapayaDashboardDiagramDescriptionProvider.java
index 22aa0dda068..d4fdd4fd7df 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/PapayaDashboardDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/PapayaDashboardDiagramDescriptionProvider.java
@@ -25,6 +25,7 @@
 import org.eclipse.sirius.components.core.api.IEditingContext;
 import org.eclipse.sirius.components.core.api.IEditingContextRepresentationDescriptionProvider;
 import org.eclipse.sirius.components.core.api.IIdentityService;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.FreeFormLayoutStrategy;
 import org.eclipse.sirius.components.diagrams.HeaderSeparatorDisplayMode;
 import org.eclipse.sirius.components.diagrams.InsideLabelLocation;
@@ -56,7 +57,7 @@ public class PapayaDashboardDiagramDescriptionProvider implements IEditingContex
 
     public static final String NAME = "PapayaDashboardDiagram";
 
-    public static final String DASHBOARD_REPRESENTATION_ID = UUID.nameUUIDFromBytes("papaya-dashboard-diagram".getBytes()).toString();;
+    public static final String DASHBOARD_REPRESENTATION_ID = UUID.nameUUIDFromBytes("papaya-dashboard-diagram".getBytes()).toString();
 
     public static final String DASHBOARD_DESCRIPTION_ID = IDiagramIdProvider.DIAGRAM_DESCRIPTION_KIND + "papaya-dashboard-diagram-description";
 
@@ -71,15 +72,16 @@ public PapayaDashboardDiagramDescriptionProvider(IIdentityService identityServic
     @Override
     public List<IRepresentationDescription> getRepresentationDescriptions(IEditingContext editingContext) {
         var dashboardDescription = DiagramDescription.newDiagramDescription(DASHBOARD_DESCRIPTION_ID)
-            .label("Papaya Dashboard Diagram")
-            .iconURLsProvider(variableManager -> List.of())
-            .nodeDescriptions(List.of(createProjectNodeDescription()))
-            .edgeDescriptions(List.of())
-            .dropHandler(variableManager -> new Failure(""))
-            .canCreatePredicate(variableManager -> false)
-            .labelProvider(variableManager -> "Papaya Dashboard Diagram")
-            .targetObjectIdProvider(this::getDiagramTargetObjectId)
-            .build();
+                .label("Papaya Dashboard Diagram")
+                .iconURLsProvider(variableManager -> List.of())
+                .nodeDescriptions(List.of(this.createProjectNodeDescription()))
+                .edgeDescriptions(List.of())
+                .dropHandler(variableManager -> new Failure(""))
+                .canCreatePredicate(variableManager -> false)
+                .labelProvider(variableManager -> "Papaya Dashboard Diagram")
+                .targetObjectIdProvider(this::getDiagramTargetObjectId)
+                .styleProvider(variableManager -> DiagramStyle.newDiagramStyle().build())
+                .build();
         return List.of(dashboardDescription);
     }
 
diff --git a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/services/PapayaDashboardEventProcessorFactory.java b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/services/PapayaDashboardEventProcessorFactory.java
index 0f7728cfd0e..42be9aa1a40 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/services/PapayaDashboardEventProcessorFactory.java
+++ b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/dashboarddiagram/services/PapayaDashboardEventProcessorFactory.java
@@ -35,6 +35,7 @@
 import org.eclipse.sirius.components.core.api.IRepresentationDescriptionSearchService;
 import org.eclipse.sirius.components.core.api.IRepresentationMetadataProvider;
 import org.eclipse.sirius.components.diagrams.Diagram;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.description.DiagramDescription;
 import org.eclipse.sirius.web.papaya.representations.dashboarddiagram.PapayaDashboardDiagramDescriptionProvider;
 import org.springframework.stereotype.Service;
@@ -95,8 +96,8 @@ public Optional<IRepresentationEventProcessor> createRepresentationEventProcesso
         String diagramDescriptionId = optionalRepresentationMetadata.map(RepresentationMetadata::descriptionId).orElse("");
 
         //The diagram does not exist (transient)
-        var diagram = buildTransientDiagram(representationId, diagramDescriptionId, targetObjectId);
-        var optionalDiagramDescription = representationDescriptionSearchService.findById(editingContext, diagramDescriptionId)
+        var diagram = this.buildTransientDiagram(representationId, diagramDescriptionId, targetObjectId);
+        var optionalDiagramDescription = this.representationDescriptionSearchService.findById(editingContext, diagramDescriptionId)
                 .filter(DiagramDescription.class::isInstance)
                 .map(DiagramDescription.class::cast);
         if (optionalDiagramDescription.isPresent()) {
@@ -127,6 +128,7 @@ private Diagram buildTransientDiagram(String representationId, String diagramDes
                 .targetObjectId(targetObjectId)
                 .edges(List.of())
                 .nodes(List.of())
+                .style(DiagramStyle.newDiagramStyle().build())
                 .build();
     }
 }
diff --git a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/lifecyclediagram/LifecycleDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/lifecyclediagram/LifecycleDiagramDescriptionProvider.java
index a7e40321b11..cf39951f380 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/lifecyclediagram/LifecycleDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/lifecyclediagram/LifecycleDiagramDescriptionProvider.java
@@ -57,6 +57,7 @@ public RepresentationDescription create(IColorProvider colorProvider) {
         lifecycleDiagramDescription.setAutoLayout(false);
         lifecycleDiagramDescription.setArrangeLayoutDirection(ArrangeLayoutDirection.UP);
         lifecycleDiagramDescription.setIconExpression("aql:'/papaya-representations/lifecycle-diagram.svg'");
+        lifecycleDiagramDescription.setStyle(DiagramFactory.eINSTANCE.createDiagramStyleDescription());
 
         var toolbar = DiagramFactory.eINSTANCE.createDiagramToolbar();
         toolbar.setExpandedByDefault(true);
diff --git a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/services/PapayaRepresentationServices.java b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/services/PapayaRepresentationServices.java
index cd7f7077fef..38633fc5892 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/services/PapayaRepresentationServices.java
+++ b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/representations/services/PapayaRepresentationServices.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -21,6 +21,7 @@
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.emf.edit.provider.IItemLabelProvider;
+import org.eclipse.sirius.components.collaborative.diagrams.api.IDiagramContext;
 import org.eclipse.sirius.components.core.api.IEditingContext;
 import org.eclipse.sirius.components.core.api.IObjectSearchService;
 import org.eclipse.sirius.components.papaya.provider.PapayaItemProviderAdapterFactory;
@@ -74,4 +75,12 @@ public List<Object> getChildren(Object object) {
 
         return children;
     }
+
+    public boolean isDiagramEmpty(IDiagramContext diagramContext) {
+        if (diagramContext != null) {
+            return diagramContext.getDiagram().getNodes().isEmpty() && diagramContext.getViewCreationRequests().isEmpty() ||
+                    diagramContext.getDiagram().getNodes().size() == 1 && !diagramContext.getViewDeletionRequests().isEmpty();
+        }
+        return false;
+    }
 }
diff --git a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/services/PapayaColorPaletteProvider.java b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/services/PapayaColorPaletteProvider.java
index d6b0d0ef9dc..7284786a016 100644
--- a/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/services/PapayaColorPaletteProvider.java
+++ b/packages/sirius-web/backend/sirius-web-papaya/src/main/java/org/eclipse/sirius/web/papaya/services/PapayaColorPaletteProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024, 2025 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -61,7 +61,14 @@ public class PapayaColorPaletteProvider {
 
     public static final String EVENT_DARK = "event.dark";
 
+    public static final String EMPTY_DIAGRAM_BACKGROUND = "empty-diagram-background";
+
     public ColorPalette getColorPalette() {
+
+        var emptyDiagramBackground = new ViewBuilders().newFixedColor()
+                .name(EMPTY_DIAGRAM_BACKGROUND)
+                .value("url('data:image/svg+xml;utf8,<svg xmlns=\"http://www.w3.org/2000/svg\" height=\"200px\" width=\"200px\"> <text fill=\"rgb(38, 30, 88)\" x=\"100px\" y=\"100px\" alignment-baseline=\"middle\" text-anchor=\"middle\" font-size=\"12\"> Drag and drop elements to get started </text> </svg>') no-repeat center center / contain")
+                .build();
         return new ViewBuilders().newColorPalette()
                 .name("Papaya Color Palette")
                 .colors(
@@ -83,7 +90,8 @@ public ColorPalette getColorPalette() {
                         this.fixedColor(QUERY_LIGHT, "#E8F5E9"),
                         this.fixedColor(QUERY_DARK, "#4CAF50"),
                         this.fixedColor(EVENT_LIGHT, "#FFF3E0"),
-                        this.fixedColor(EVENT_DARK, "#FF9800")
+                        this.fixedColor(EVENT_DARK, "#FF9800"),
+                        emptyDiagramBackground
                 )
                 .build();
     }
diff --git a/packages/sirius-web/backend/sirius-web-starter/pom.xml b/packages/sirius-web/backend/sirius-web-starter/pom.xml
index f1147965b27..5299da69c04 100644
--- a/packages/sirius-web/backend/sirius-web-starter/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-starter/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-starter</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-starter</name>
 	<description>Sirius Web Starter</description>
 
@@ -36,224 +36,224 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-infrastructure</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-browser-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-charts-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-deck-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-widget-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors-widget-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-formdescriptioneditors-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-gantt-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-portals-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-selection-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-trees-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-validation-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-web</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-builder</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf-widget-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/sirius-web/backend/sirius-web-tests-data/pom.xml b/packages/sirius-web/backend/sirius-web-tests-data/pom.xml
index c40fbd25a18..9ebd5b63899 100644
--- a/packages/sirius-web/backend/sirius-web-tests-data/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-tests-data/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-tests-data</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-tests-data</name>
 	<description>Sirius Web Tests Data</description>
 
diff --git a/packages/sirius-web/backend/sirius-web-tests-data/src/main/resources/sirius-web-scripts/studio.sql b/packages/sirius-web/backend/sirius-web-tests-data/src/main/resources/sirius-web-scripts/studio.sql
index a4a6991c3ad..c71e0e43b7c 100644
--- a/packages/sirius-web/backend/sirius-web-tests-data/src/main/resources/sirius-web-scripts/studio.sql
+++ b/packages/sirius-web/backend/sirius-web-tests-data/src/main/resources/sirius-web-scripts/studio.sql
@@ -478,6 +478,29 @@ INSERT INTO document (
                "data":{
                  "name":"Root Diagram",
                  "domainType":"buck::Root",
+                 "style": {
+                   "id": "e7ed918c-0c7a-42a7-8df1-7f576143ba8e",
+                   "eClass": "diagram:DiagramStyleDescription",
+                   "data": {
+                    "background": "cccf659b-57a7-4517-bb8c-e284254cce1b"
+                   }
+                 },
+                 "conditionalStyles": [
+                   {
+                     "id": "4da615cd-1926-450c-bbda-4fd087c94d00",
+                     "eClass": "diagram:ConditionalDiagramStyle",
+                     "data": {
+                       "condition": "aql:self.eContents()->size()>2",
+                       "style": {
+                         "id": "d5bb9b65-6a3e-4948-a9cd-08575124f934",
+                         "eClass": "diagram:DiagramStyleDescription",
+                         "data": {
+                           "background": "0286a7e0-5a9d-40c8-aa23-e0a1c6fab90a"
+                         }
+                       }
+                     }
+                   }
+                 ],
                  "palette": {
                    "id": "46545c9a-c582-4dbe-8456-6affd7bfdfe8",
                    "eClass": "diagram:DiagramPalette",
diff --git a/packages/sirius-web/backend/sirius-web-tests/pom.xml b/packages/sirius-web/backend/sirius-web-tests/pom.xml
index 7c2a1733da9..df736ffdd8f 100644
--- a/packages/sirius-web/backend/sirius-web-tests/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-tests</name>
 	<description>Sirius Web Tests</description>
 
@@ -32,57 +32,57 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-application</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-formdescriptioneditors</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-widget-reference</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-portals-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-view-fork</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/sirius-web/backend/sirius-web-view-fork/pom.xml b/packages/sirius-web/backend/sirius-web-view-fork/pom.xml
index 987e84eeadf..9088735af91 100644
--- a/packages/sirius-web/backend/sirius-web-view-fork/pom.xml
+++ b/packages/sirius-web/backend/sirius-web-view-fork/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web-view-fork</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web-view-fork</name>
 	<description>Sirius Web View Fork</description>
 
@@ -37,42 +37,42 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
         <dependency>
             <groupId>org.eclipse.sirius</groupId>
             <artifactId>sirius-web-application</artifactId>
-            <version>2026.1.6</version>
+            <version>2026.3.0</version>
         </dependency>
 
     </dependencies>
diff --git a/packages/sirius-web/backend/sirius-web/pom.xml b/packages/sirius-web/backend/sirius-web/pom.xml
index c6ae4d1f2eb..6c07c4533ae 100644
--- a/packages/sirius-web/backend/sirius-web/pom.xml
+++ b/packages/sirius-web/backend/sirius-web/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-web</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-web</name>
 	<description>Sirius Web</description>
 
@@ -44,34 +44,34 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-starter</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-frontend</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 
 		<!-- Sirius Web Specific Dependencies -->
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-papaya</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-view-fork</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-flow-starter</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-task-starter</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -80,7 +80,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-e2e-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>com.fasterxml.jackson.datatype</groupId>
@@ -127,55 +127,55 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-tests-data</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-forms-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-gantt-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-trees-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-portals-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/application/controllers/diagrams/DiagramStyleControllerTests.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/application/controllers/diagrams/DiagramStyleControllerTests.java
new file mode 100644
index 00000000000..b66a58597e7
--- /dev/null
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/application/controllers/diagrams/DiagramStyleControllerTests.java
@@ -0,0 +1,149 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.web.application.controllers.diagrams;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
+import static org.eclipse.sirius.components.forms.tests.FormEventPayloadConsumer.assertRefreshedFormThat;
+
+import com.jayway.jsonpath.JsonPath;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+import java.util.function.Consumer;
+
+import org.eclipse.sirius.components.collaborative.diagrams.dto.DiagramRefreshedEventPayload;
+import org.eclipse.sirius.components.collaborative.dto.CreateChildInput;
+import org.eclipse.sirius.components.collaborative.dto.CreateChildSuccessPayload;
+import org.eclipse.sirius.components.collaborative.dto.CreateRepresentationInput;
+import org.eclipse.sirius.components.collaborative.forms.dto.FormRefreshedEventPayload;
+import org.eclipse.sirius.components.forms.tests.navigation.FormNavigator;
+import org.eclipse.sirius.components.widget.reference.ReferenceWidget;
+import org.eclipse.sirius.components.widget.reference.tests.assertions.ReferenceWidgetAssertions;
+import org.eclipse.sirius.web.AbstractIntegrationTests;
+import org.eclipse.sirius.web.application.views.details.dto.DetailsEventInput;
+import org.eclipse.sirius.web.data.StudioIdentifiers;
+import org.eclipse.sirius.web.tests.data.GivenSiriusWebServer;
+import org.eclipse.sirius.web.tests.graphql.CreateChildMutationRunner;
+import org.eclipse.sirius.web.tests.graphql.DetailsEventSubscriptionRunner;
+import org.eclipse.sirius.web.tests.services.api.IGivenCreatedDiagramSubscription;
+import org.eclipse.sirius.web.tests.services.api.IGivenInitialServerState;
+import org.eclipse.sirius.web.tests.services.representation.RepresentationIdBuilder;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.transaction.annotation.Transactional;
+
+import reactor.test.StepVerifier;
+
+/**
+ * Integration tests of the "Diagram Style" view.
+ *
+ * @author frouene
+ */
+@Transactional
+@SuppressWarnings("checkstyle:MultipleStringLiterals")
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, properties = { "sirius.web.test.enabled=studio" })
+public class DiagramStyleControllerTests extends AbstractIntegrationTests {
+
+    @Autowired
+    private IGivenInitialServerState givenInitialServerState;
+
+    @Autowired
+    private DetailsEventSubscriptionRunner detailsEventSubscriptionRunner;
+
+    @Autowired
+    private IGivenCreatedDiagramSubscription givenCreatedDiagramSubscription;
+
+    @Autowired
+    private CreateChildMutationRunner createChildMutationRunner;
+
+    @Autowired
+    private RepresentationIdBuilder representationIdBuilder;
+
+    @BeforeEach
+    public void beforeEach() {
+        this.givenInitialServerState.initialize();
+    }
+
+    @Test
+    @GivenSiriusWebServer
+    @DisplayName("Given a diagram style, when we subscribe to its properties events, then the form contains background property")
+    public void givenDiagramStyleObjectWhenWeSubscribeToItsPropertiesEventsThenTheFormContainsBackgroundProperty() {
+        var detailRepresentationId = this.representationIdBuilder.buildDetailsRepresentationId(List.of(StudioIdentifiers.DIAGRAM_STYLE_DESCRIPTION_OBJECT.toString()));
+        var input = new DetailsEventInput(UUID.randomUUID(), StudioIdentifiers.SAMPLE_STUDIO_EDITING_CONTEXT_ID, detailRepresentationId);
+        var flux = this.detailsEventSubscriptionRunner.run(input)
+                .flux()
+                .filter(FormRefreshedEventPayload.class::isInstance);
+
+        Consumer<Object> formContentMatcher = assertRefreshedFormThat(form -> {
+            var groupNavigator = new FormNavigator(form).page("DiagramStyleDescription").group("Core Properties");
+
+            var backgroundReferenceWidget = groupNavigator.findWidget("Background", ReferenceWidget.class);
+            ReferenceWidgetAssertions.assertThat(backgroundReferenceWidget).hasValueWithLabel("White");
+        });
+
+        StepVerifier.create(flux)
+                .consumeNextWith(formContentMatcher)
+                .thenCancel()
+                .verify(Duration.ofSeconds(10));
+    }
+
+    @Test
+    @GivenSiriusWebServer
+    @DisplayName("Given a view based diagram, when diagram is using conditional style, then the style is computed properly")
+    public void givenViewBasedDiagramWhenDiagramIsUsingConditionalStyleThenTheStyleIsComputedProperly() {
+        var input = new CreateRepresentationInput(UUID.randomUUID(), StudioIdentifiers.INSTANCE_EDITING_CONTEXT_ID, StudioIdentifiers.DIAGRAM_DESCRIPTION_ID, StudioIdentifiers.ROOT_OBJECT.toString(), "");
+        var flux = this.givenCreatedDiagramSubscription.createAndSubscribe(input).flux();
+
+        Consumer<Object> initialDiagramStyleConsumer = payload -> Optional.of(payload)
+                .filter(DiagramRefreshedEventPayload.class::isInstance)
+                .map(DiagramRefreshedEventPayload.class::cast)
+                .map(DiagramRefreshedEventPayload::diagram)
+                .ifPresentOrElse(diagram -> assertThat(diagram.getStyle())
+                        .isNotNull()
+                        .matches(style -> style.getBackground().equals("#FFFFFF")), () -> fail("Missing style background"));
+
+        Consumer<Object> conditonnalDiagramStyleConsumer = payload -> Optional.of(payload)
+                .filter(DiagramRefreshedEventPayload.class::isInstance)
+                .map(DiagramRefreshedEventPayload.class::cast)
+                .map(DiagramRefreshedEventPayload::diagram)
+                .ifPresentOrElse(diagram -> assertThat(diagram.getStyle())
+                        .isNotNull()
+                        .matches(style -> style.getBackground().equals("#000000")), () -> fail("Missing style background"));
+
+        Runnable runnable = () -> {
+            var createChildInput = new CreateChildInput(
+                    UUID.randomUUID(),
+                    StudioIdentifiers.INSTANCE_EDITING_CONTEXT_ID,
+                    StudioIdentifiers.ROOT_OBJECT.toString(),
+                    "humans-Human"
+            );
+            var result = this.createChildMutationRunner.run(createChildInput);
+            String typename = JsonPath.read(result.data(), "$.data.createChild.__typename");
+            assertThat(typename).isEqualTo(CreateChildSuccessPayload.class.getSimpleName());
+        };
+
+        StepVerifier.create(flux)
+                .consumeNextWith(initialDiagramStyleConsumer)
+                .then(runnable)
+                .consumeNextWith(conditonnalDiagramStyleConsumer)
+                .thenCancel()
+                .verify(Duration.ofSeconds(10));
+    }
+
+}
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/MigrationIdentifiers.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/MigrationIdentifiers.java
index 957d9709413..2f61762b3ab 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/MigrationIdentifiers.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/MigrationIdentifiers.java
@@ -57,10 +57,14 @@ public final class MigrationIdentifiers {
 
     public static final UUID MIGRATION_INSIDE_LABEL_STYLE_HEADER_SEPARATOR_DISPLAY_STUDIO = UUID.fromString("dc9643f8-b1ce-4c93-a176-379063d42b32");
 
+    public static final UUID MIGRATION_DIAGRAM_STYLE_DESCRIPTION = UUID.fromString("14df1eb9-0915-4a62-ba83-b26ce5e2cfe1");
+
     public static final String MIGRATION_INSIDE_LABEL_STYLE_HEADER_SEPARATOR_DISPLAY_STUDIO_DIAGRAM = "InsideLabelStyle#displayHeaderSeparator migration";
 
     public static final String MIGRATION_INSIDE_LABEL_STYLE_HEADER_SEPARATOR_DISPLAY_STUDIO_NODE_1 = "migration Node 1";
 
+    public static final String MIGRATION_DIAGRAM_STYLE_DESCRIPTION_DIAGRAM = "NodeStyleDescription#color migration";
+
     public static final UUID MIGRATION_WIDGET_DESCRIPTION_STYLE_LAYOUT_PROPERTIES_MIGRATION_PARTICIPANT_STUDIO = UUID.fromString("e344d967-a639-4f6c-9c00-a466d51063c6");
 
     public static final String MIGRATION_WIDGET_DESCRIPTION_STYLE_LAYOUT_PROPERTIES_MIGRATION_PARTICIPANT_STUDIO_FORM = "Form View for WidgetDescriptionStyleLayoutPropertiesMigrationParticipant";
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/StudioIdentifiers.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/StudioIdentifiers.java
index e20e8a8a871..af06caf9883 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/StudioIdentifiers.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/data/StudioIdentifiers.java
@@ -78,6 +78,8 @@ public final class StudioIdentifiers {
 
     public static final UUID EDGE_STYLE_OBJECT = UUID.fromString("a2a3713f-57bc-422b-92e8-b22ed69e94a8");
 
+    public static final UUID DIAGRAM_STYLE_DESCRIPTION_OBJECT = UUID.fromString("e7ed918c-0c7a-42a7-8df1-7f576143ba8e");
+
     private StudioIdentifiers() {
         // Prevent instantiation
     }
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ActionDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ActionDiagramDescriptionProvider.java
index 033d37a4d78..27fefffdbdf 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ActionDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ActionDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -23,6 +23,7 @@
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
 import org.eclipse.sirius.components.view.builder.generated.diagram.ActionBuilder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramPaletteBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
@@ -141,6 +142,7 @@ private DiagramDescription createDiagramDescription() {
                 .edgeDescriptions()
                 .palette(diagramPalette)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/AncestorsVariableDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/AncestorsVariableDiagramDescriptionProvider.java
index d2aef6c80be..3191900c6b8 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/AncestorsVariableDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/AncestorsVariableDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -22,6 +22,7 @@
 import org.eclipse.sirius.components.emf.services.IDAdapter;
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramPaletteBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.FreeFormLayoutStrategyDescriptionBuilder;
@@ -160,6 +161,7 @@ private DiagramDescription createDiagramDescription() {
                 .edgeDescriptions()
                 .palette(diagramPalette)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/BorderNodeDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/BorderNodeDiagramDescriptionProvider.java
index 0ec319d612b..2c2b07ce8ac 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/BorderNodeDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/BorderNodeDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -22,6 +22,7 @@
 import org.eclipse.sirius.components.emf.services.IDAdapter;
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.FreeFormLayoutStrategyDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
@@ -129,6 +130,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesDiagramDescriptionProvider.java
index 9f57ac7df41..4f8e0853408 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesDiagramDescriptionProvider.java
@@ -24,6 +24,7 @@
 import org.eclipse.sirius.components.view.View;
 import org.eclipse.sirius.components.view.builder.generated.customnodes.EllipseNodeStyleDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DeleteToolBuilder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.NodeDescriptionBuilder;
@@ -132,6 +133,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesUnsynchonisedDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesUnsynchonisedDiagramDescriptionProvider.java
index 13167f94c91..0185e8af87b 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesUnsynchonisedDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/CustomNodesUnsynchonisedDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024, 2025 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -23,6 +23,7 @@
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
 import org.eclipse.sirius.components.view.builder.generated.customnodes.EllipseNodeStyleDescriptionBuilder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.NodeDescriptionBuilder;
@@ -119,6 +120,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/DropNodeDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/DropNodeDiagramDescriptionProvider.java
index e2472b556ee..6b783d355ff 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/DropNodeDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/DropNodeDiagramDescriptionProvider.java
@@ -145,8 +145,8 @@ private DiagramDescription createDiagramDescription() {
                 .build();
 
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         this.diagramDescription = new DiagramBuilders().newDiagramDescription()
                 .name("Diagram")
@@ -157,6 +157,7 @@ private DiagramDescription createDiagramDescription() {
                 .palette(diagramPalette)
                 .toolbar(toolbar)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgeDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgeDiagramDescriptionProvider.java
index 2ba9eb9a07f..5736bda8240 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgeDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgeDiagramDescriptionProvider.java
@@ -182,6 +182,7 @@ private DiagramDescription createDiagramDescription() {
                 .edgeDescriptions(edgeDescription)
                 .autoLayout(false)
                 .toolbar(toolbar)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgePaletteDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgePaletteDiagramDescriptionProvider.java
index 9d192b2deaf..6b462bbc3b4 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgePaletteDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EdgePaletteDiagramDescriptionProvider.java
@@ -140,8 +140,8 @@ private DiagramDescription createDiagramDescription() {
                 .build();
 
         var toolbar = new DiagramBuilders().newDiagramToolbar()
-            .expandedByDefault(true)
-            .build();
+                .expandedByDefault(true)
+                .build();
 
         this.diagramDescription = new DiagramBuilders().newDiagramDescription()
                 .name("Diagram")
@@ -150,6 +150,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions(edgeDescription)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .toolbar(toolbar)
                 .build();
 
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EditableLabelDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EditableLabelDiagramDescriptionProvider.java
index 478ad5d1386..7958d6c9084 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EditableLabelDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/EditableLabelDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024, 2025 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -175,6 +175,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions(edgeDescription)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ExpandCollapseDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ExpandCollapseDiagramDescriptionProvider.java
index 1e5f7bbff6a..4d845861d37 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ExpandCollapseDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ExpandCollapseDiagramDescriptionProvider.java
@@ -23,6 +23,7 @@
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DeleteToolBuilder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.NodeDescriptionBuilder;
@@ -170,6 +171,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/GroupPaletteDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/GroupPaletteDiagramDescriptionProvider.java
index 13d10241d6e..bef2eb1bfe7 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/GroupPaletteDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/GroupPaletteDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -52,6 +52,7 @@
 @Conditional(OnStudioTests.class)
 @SuppressWarnings("checkstyle:MultipleStringLiterals")
 public class GroupPaletteDiagramDescriptionProvider implements IEditingContextProcessor {
+
     private final IDiagramIdProvider diagramIdProvider;
 
     private final View view;
@@ -158,6 +159,7 @@ private DiagramDescription createDiagramDescription() {
                 .palette(diagramPalette)
                 .groupPalette(groupPalette)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ImageNodeDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ImageNodeDiagramDescriptionProvider.java
index 8e0cc650b6b..4b83fa54b96 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ImageNodeDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ImageNodeDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -23,6 +23,7 @@
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DeleteToolBuilder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.ImageNodeStyleDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.NodeDescriptionBuilder;
@@ -136,6 +137,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ManageVisibilityActionDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ManageVisibilityActionDiagramDescriptionProvider.java
index 903f00c3dcb..6d5d00d7da5 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ManageVisibilityActionDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ManageVisibilityActionDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -12,6 +12,9 @@
  *******************************************************************************/
 package org.eclipse.sirius.web.services.diagrams;
 
+import java.util.Objects;
+import java.util.UUID;
+
 import org.eclipse.emf.ecore.util.EcoreUtil;
 import org.eclipse.sirius.components.core.api.IEditingContext;
 import org.eclipse.sirius.components.core.api.IEditingContextProcessor;
@@ -19,6 +22,7 @@
 import org.eclipse.sirius.components.emf.services.IDAdapter;
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.NodeDescriptionBuilder;
@@ -35,9 +39,6 @@
 import org.springframework.context.annotation.Conditional;
 import org.springframework.stereotype.Service;
 
-import java.util.Objects;
-import java.util.UUID;
-
 /**
  * Used to provide a view based diagram description to test diagrams with manage visibility actions.
  *
@@ -76,7 +77,7 @@ private View createView() {
         viewForDiagramDesc.getDescriptions().add(this.createDiagramDescription());
 
         viewForDiagramDesc.eAllContents().forEachRemaining(eObject ->
-            eObject.eAdapters().add(new IDAdapter(UUID.nameUUIDFromBytes(EcoreUtil.getURI(eObject).toString().getBytes()))));
+                eObject.eAdapters().add(new IDAdapter(UUID.nameUUIDFromBytes(EcoreUtil.getURI(eObject).toString().getBytes()))));
 
         String resourcePath = UUID.nameUUIDFromBytes("ManageVisibilityActionDiagramDescription".getBytes()).toString();
         JsonResource resource = new JSONResourceFactory().createResourceFromPath(resourcePath);
@@ -121,8 +122,9 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
     }
-}
\ No newline at end of file
+}
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ModelOperationDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ModelOperationDiagramDescriptionProvider.java
index 355d6aecbb7..f74df78d97e 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ModelOperationDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/ModelOperationDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024, 2025 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -23,6 +23,7 @@
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.CreateInstance;
 import org.eclipse.sirius.components.view.View;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramPaletteBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
@@ -150,6 +151,7 @@ private DiagramDescription createDiagramDescription() {
                 .edgeDescriptions()
                 .palette(diagramPalette)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
@@ -215,16 +217,16 @@ private void createCreateNodeToolWithComputedNewSelection() {
                                 .expression("aql:self")
                                 .children(
                                         new ViewBuilders().newLet()
-                                            .variableName("project")
-                                            .valueExpression("aql:self")
-                                            .children(
-                                                    new ViewBuilders().newChangeContext().expression("aql:project").build(),
-                                                    this.createCreateNewComponentOperation("component1", "aql:'Component1'"),
-                                                    new ViewBuilders().newChangeContext().expression("aql:project").build(),
-                                                    this.createCreateNewComponentOperation("component2", "aql:'Component2'"),
-                                                    new ViewBuilders().newChangeContext().expression("aql:project").build(),
-                                                    this.createCreateNewComponentOperation("component3", "aql:'Component3'"))
-                                            .build()
+                                                .variableName("project")
+                                                .valueExpression("aql:self")
+                                                .children(
+                                                        new ViewBuilders().newChangeContext().expression("aql:project").build(),
+                                                        this.createCreateNewComponentOperation("component1", "aql:'Component1'"),
+                                                        new ViewBuilders().newChangeContext().expression("aql:project").build(),
+                                                        this.createCreateNewComponentOperation("component2", "aql:'Component2'"),
+                                                        new ViewBuilders().newChangeContext().expression("aql:project").build(),
+                                                        this.createCreateNewComponentOperation("component3", "aql:'Component3'"))
+                                                .build()
                                 )
                                 .build()
                 )
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/RelationBasedEdgeDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/RelationBasedEdgeDiagramDescriptionProvider.java
index daf7826d38b..071bb4c0f55 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/RelationBasedEdgeDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/RelationBasedEdgeDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2025 Obeo.
+ * Copyright (c) 2025, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -24,6 +24,7 @@
 import org.eclipse.sirius.components.emf.services.IDAdapter;
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.EdgeDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.EdgeStyleBuilder;
@@ -125,6 +126,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(entityNodeDescription)
                 .edgeDescriptions(containmentEdgeDescription)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UndoRedoDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UndoRedoDiagramDescriptionProvider.java
index 5ec1732c28a..1cfdc6fd536 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UndoRedoDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UndoRedoDiagramDescriptionProvider.java
@@ -23,6 +23,7 @@
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DeleteToolBuilder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.NodeDescriptionBuilder;
@@ -179,6 +180,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UnsynchronizedDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UnsynchronizedDiagramDescriptionProvider.java
index 87c21e846f5..4c10f545190 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UnsynchronizedDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/UnsynchronizedDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024, 2025 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -24,6 +24,7 @@
 import org.eclipse.sirius.components.view.View;
 import org.eclipse.sirius.components.view.builder.generated.diagram.CreateViewBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DeleteViewBuilder;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramPaletteBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DropToolBuilder;
@@ -200,6 +201,7 @@ private DiagramDescription createDiagramDescription() {
                 .edgeDescriptions()
                 .palette(diagramPalette)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/VisibilityDiagramDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/VisibilityDiagramDescriptionProvider.java
index b18fa16bf47..4684d06874e 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/VisibilityDiagramDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/diagrams/VisibilityDiagramDescriptionProvider.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024 Obeo.
+ * Copyright (c) 2024, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -22,6 +22,7 @@
 import org.eclipse.sirius.components.emf.services.IDAdapter;
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.InsideLabelDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.NodeDescriptionBuilder;
@@ -196,6 +197,7 @@ private DiagramDescription createDiagramDescription() {
                 .nodeDescriptions(nodeDescription)
                 .edgeDescriptions()
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/selection/SelectionDescriptionProvider.java b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/selection/SelectionDescriptionProvider.java
index d4a08772505..5b91c8029b6 100644
--- a/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/selection/SelectionDescriptionProvider.java
+++ b/packages/sirius-web/backend/sirius-web/src/test/java/org/eclipse/sirius/web/services/selection/SelectionDescriptionProvider.java
@@ -22,6 +22,7 @@
 import org.eclipse.sirius.components.emf.services.IDAdapter;
 import org.eclipse.sirius.components.emf.services.JSONResourceFactory;
 import org.eclipse.sirius.components.view.View;
+import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramBuilders;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramDescriptionBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.DiagramPaletteBuilder;
 import org.eclipse.sirius.components.view.builder.generated.diagram.EdgeToolBuilder;
@@ -60,13 +61,9 @@ public class SelectionDescriptionProvider implements IEditingContextProcessor {
     private static final String DIALOG_MESSAGE = "Select the objects to consider";
 
     private final View view;
-
+    private final IDiagramIdProvider diagramIdProvider;
     private DiagramDescription diagramDescription;
-
     private NodeTool createNodeTool;
-
-    private final IDiagramIdProvider diagramIdProvider;
-
     private SelectionDialogTreeDescription selectionDialogTreeDescription;
 
     private SelectionDialogDescription selectionDialog;
@@ -156,6 +153,7 @@ private DiagramDescription createDiagramDescription() {
                 .edgeDescriptions()
                 .palette(diagramPalette)
                 .autoLayout(false)
+                .style(new DiagramBuilders().newDiagramStyleDescription().build())
                 .build();
 
         return this.diagramDescription;
diff --git a/packages/sirius-web/frontend/sirius-web-application/package.json b/packages/sirius-web/frontend/sirius-web-application/package.json
index 618705a980d..c7f6a5e32be 100644
--- a/packages/sirius-web/frontend/sirius-web-application/package.json
+++ b/packages/sirius-web/frontend/sirius-web-application/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@eclipse-sirius/sirius-web-application",
   "author": "Eclipse Sirius",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "license": "EPL-2.0",
   "repository": {
     "type": "git",
diff --git a/packages/sirius-web/frontend/sirius-web-papaya/package.json b/packages/sirius-web/frontend/sirius-web-papaya/package.json
index 85598c00ba7..9cd5b9995c1 100644
--- a/packages/sirius-web/frontend/sirius-web-papaya/package.json
+++ b/packages/sirius-web/frontend/sirius-web-papaya/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-web-papaya",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/sirius-web/frontend/sirius-web-view-fork/package.json b/packages/sirius-web/frontend/sirius-web-view-fork/package.json
index af5d851d4a9..76123f7277c 100644
--- a/packages/sirius-web/frontend/sirius-web-view-fork/package.json
+++ b/packages/sirius-web/frontend/sirius-web-view-fork/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-web-view-fork",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/sirius-web/frontend/sirius-web/package.json b/packages/sirius-web/frontend/sirius-web/package.json
index 3a318fc8f5e..200d9c3b954 100644
--- a/packages/sirius-web/frontend/sirius-web/package.json
+++ b/packages/sirius-web/frontend/sirius-web/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@eclipse-sirius/sirius-web",
   "author": "Eclipse Sirius",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "license": "EPL-2.0",
   "repository": {
     "type": "git",
diff --git a/packages/starters/backend/pom.xml b/packages/starters/backend/pom.xml
index 8faeae78b51..9da1548a680 100644
--- a/packages/starters/backend/pom.xml
+++ b/packages/starters/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-starter-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-starter-root</name>
 	<description>Sirius Components Starter Root</description>
diff --git a/packages/starters/backend/sirius-components-flow-starter/pom.xml b/packages/starters/backend/sirius-components-flow-starter/pom.xml
index 7a146b00477..6d0d3ee190a 100644
--- a/packages/starters/backend/sirius-components-flow-starter/pom.xml
+++ b/packages/starters/backend/sirius-components-flow-starter/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-flow-starter</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-flow-starter</name>
 	<description>Sirius Components Flow Starter</description>
 
@@ -47,7 +47,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-application</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 
 		<dependency>
@@ -63,13 +63,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyUnsynchronizedViewDiagramDescriptionProvider.java b/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyUnsynchronizedViewDiagramDescriptionProvider.java
index 667382a5290..1ca84603981 100644
--- a/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyUnsynchronizedViewDiagramDescriptionProvider.java
+++ b/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyUnsynchronizedViewDiagramDescriptionProvider.java
@@ -62,6 +62,7 @@ public RepresentationDescription create(IColorProvider colorProvider) {
                 .name("Topography unsynchronized")
                 .titleExpression("Topography unsynchronized")
                 .toolbar(toolbar)
+                .style(this.diagramBuilderHelper.newDiagramStyleDescription().build())
                 .build();
 
 
diff --git a/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyViewDiagramDescriptionProvider.java b/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyViewDiagramDescriptionProvider.java
index e316642d86d..97fcd246e00 100644
--- a/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyViewDiagramDescriptionProvider.java
+++ b/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyViewDiagramDescriptionProvider.java
@@ -61,6 +61,7 @@ public RepresentationDescription create(IColorProvider colorProvider) {
                 .name("Topography")
                 .titleExpression("Topography")
                 .toolbar(toolbar)
+                .style(this.diagramBuilderHelper.newDiagramStyleDescription().build())
                 .build();
 
 
diff --git a/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyWithAutoLayoutViewDiagramDescriptionProvider.java b/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyWithAutoLayoutViewDiagramDescriptionProvider.java
index f08ee846d13..224f8e51856 100644
--- a/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyWithAutoLayoutViewDiagramDescriptionProvider.java
+++ b/packages/starters/backend/sirius-components-flow-starter/src/main/java/org/eclipse/sirius/components/flow/starter/view/FlowTopographyWithAutoLayoutViewDiagramDescriptionProvider.java
@@ -61,6 +61,7 @@ public RepresentationDescription create(IColorProvider colorProvider) {
                 .name("Topography with auto layout")
                 .titleExpression("Topography with auto layout")
                 .toolbar(toolbar)
+                .style(this.diagramBuilderHelper.newDiagramStyleDescription().build())
                 .build();
 
 
diff --git a/packages/starters/backend/sirius-components-task-starter/pom.xml b/packages/starters/backend/sirius-components-task-starter/pom.xml
index de949b853aa..16c5224bd40 100644
--- a/packages/starters/backend/sirius-components-task-starter/pom.xml
+++ b/packages/starters/backend/sirius-components-task-starter/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-task-starter</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-task-starter</name>
 	<description>Sirius Components Task Starter</description>
 
@@ -47,23 +47,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-web-application</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-task</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-task-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/tables/backend/pom.xml b/packages/tables/backend/pom.xml
index edf66704d45..01fde41cd11 100644
--- a/packages/tables/backend/pom.xml
+++ b/packages/tables/backend/pom.xml
@@ -18,7 +18,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-tables-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-tables-root</name>
 	<description>Sirius Components Tables Root</description>
diff --git a/packages/tables/backend/sirius-components-collaborative-tables/pom.xml b/packages/tables/backend/sirius-components-collaborative-tables/pom.xml
index a76f84756dc..91abed9caf3 100644
--- a/packages/tables/backend/sirius-components-collaborative-tables/pom.xml
+++ b/packages/tables/backend/sirius-components-collaborative-tables/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-tables</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-tables</name>
 	<description>Sirius Components Collaborative Tables</description>
 
@@ -40,23 +40,23 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/tables/backend/sirius-components-tables-graphql/pom.xml b/packages/tables/backend/sirius-components-tables-graphql/pom.xml
index 2f79fa1a535..4dd6f5e3222 100644
--- a/packages/tables/backend/sirius-components-tables-graphql/pom.xml
+++ b/packages/tables/backend/sirius-components-tables-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-tables-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-tables-graphql</name>
 	<description>Sirius Components Tables GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/tables/backend/sirius-components-tables-tests/pom.xml b/packages/tables/backend/sirius-components-tables-tests/pom.xml
index 7412d3cf324..b918c2ea968 100644
--- a/packages/tables/backend/sirius-components-tables-tests/pom.xml
+++ b/packages/tables/backend/sirius-components-tables-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-tables-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-tables-tests</name>
 	<description>Sirius Components Tables Tests</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.assertj</groupId>
@@ -45,12 +45,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/tables/backend/sirius-components-tables/pom.xml b/packages/tables/backend/sirius-components-tables/pom.xml
index 301dca2cb00..582de321ed9 100644
--- a/packages/tables/backend/sirius-components-tables/pom.xml
+++ b/packages/tables/backend/sirius-components-tables/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-tables</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-tables</name>
 	<description>Sirius Components Tables</description>
 
@@ -32,7 +32,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/tables/frontend/sirius-components-tables/package.json b/packages/tables/frontend/sirius-components-tables/package.json
index c1486e657a4..37f02d45b76 100644
--- a/packages/tables/frontend/sirius-components-tables/package.json
+++ b/packages/tables/frontend/sirius-components-tables/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-tables",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/task/backend/pom.xml b/packages/task/backend/pom.xml
index 20b28678067..da645c95112 100644
--- a/packages/task/backend/pom.xml
+++ b/packages/task/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-task-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-task-root</name>
 	<description>Sirius Components Task Root</description>
diff --git a/packages/task/backend/sirius-components-task-edit/pom.xml b/packages/task/backend/sirius-components-task-edit/pom.xml
index 7d44753e942..abc362616a2 100644
--- a/packages/task/backend/sirius-components-task-edit/pom.xml
+++ b/packages/task/backend/sirius-components-task-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-task-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-task-edit</name>
 	<description>Sirius Components Task - Edit Support</description>
 
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-task</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/task/backend/sirius-components-task/pom.xml b/packages/task/backend/sirius-components-task/pom.xml
index 028ddf7b137..3684e22e885 100644
--- a/packages/task/backend/sirius-components-task/pom.xml
+++ b/packages/task/backend/sirius-components-task/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-task</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-task</name>
 	<description>Sirius Components Task Meta-model</description>
 
diff --git a/packages/tests/backend/pom.xml b/packages/tests/backend/pom.xml
index ed6d57df76a..f008f60f105 100644
--- a/packages/tests/backend/pom.xml
+++ b/packages/tests/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-tests-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-tests-root</name>
 	<description>Sirius Components Tests Root</description>
diff --git a/packages/tests/backend/sirius-components-graphql-tests/pom.xml b/packages/tests/backend/sirius-components-graphql-tests/pom.xml
index a661890c3bf..1a85fc64649 100644
--- a/packages/tests/backend/sirius-components-graphql-tests/pom.xml
+++ b/packages/tests/backend/sirius-components-graphql-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-graphql-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-graphql-tests</name>
 	<description>Sirius Components GraphQL Tests</description>
 
@@ -53,17 +53,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/tests/backend/sirius-components-spring-tests/pom.xml b/packages/tests/backend/sirius-components-spring-tests/pom.xml
index 1ac3bdb84e5..3a8ee67740e 100644
--- a/packages/tests/backend/sirius-components-spring-tests/pom.xml
+++ b/packages/tests/backend/sirius-components-spring-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-spring-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-spring-tests</name>
 	<description>Sirius Components Spring Tests</description>
 
@@ -36,7 +36,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-annotations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
diff --git a/packages/tests/backend/sirius-components-tests/pom.xml b/packages/tests/backend/sirius-components-tests/pom.xml
index c0b6331104a..459f65b918a 100644
--- a/packages/tests/backend/sirius-components-tests/pom.xml
+++ b/packages/tests/backend/sirius-components-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-tests</name>
 	<description>Sirius Components Tests</description>
 
@@ -41,7 +41,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-annotations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/trees/backend/pom.xml b/packages/trees/backend/pom.xml
index bf673e9615e..45eddd48d5a 100644
--- a/packages/trees/backend/pom.xml
+++ b/packages/trees/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-trees-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-trees-root</name>
 	<description>Sirius Components Trees Root</description>
diff --git a/packages/trees/backend/sirius-components-collaborative-trees/pom.xml b/packages/trees/backend/sirius-components-collaborative-trees/pom.xml
index cef056027cc..2b5cdbb2c7c 100644
--- a/packages/trees/backend/sirius-components-collaborative-trees/pom.xml
+++ b/packages/trees/backend/sirius-components-collaborative-trees/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-trees</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-trees</name>
 	<description>Sirius Components Collaborative Trees</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
@@ -54,13 +54,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/trees/backend/sirius-components-trees-graphql/pom.xml b/packages/trees/backend/sirius-components-trees-graphql/pom.xml
index f9bbbc58a98..9a4b0761ab3 100644
--- a/packages/trees/backend/sirius-components-trees-graphql/pom.xml
+++ b/packages/trees/backend/sirius-components-trees-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-trees-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-trees-graphql</name>
 	<description>Sirius Components Trees GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/trees/backend/sirius-components-trees-tests/pom.xml b/packages/trees/backend/sirius-components-trees-tests/pom.xml
index 741c830c167..db4855c7d18 100644
--- a/packages/trees/backend/sirius-components-trees-tests/pom.xml
+++ b/packages/trees/backend/sirius-components-trees-tests/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-trees-tests</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-trees-tests</name>
 	<description>Sirius Components Trees Tests</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/trees/backend/sirius-components-trees/pom.xml b/packages/trees/backend/sirius-components-trees/pom.xml
index 2a40d89e60d..59c965ad037 100644
--- a/packages/trees/backend/sirius-components-trees/pom.xml
+++ b/packages/trees/backend/sirius-components-trees/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-trees</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-trees</name>
 	<description>Sirius Components Trees</description>
 
@@ -32,12 +32,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/trees/frontend/sirius-components-trees/package.json b/packages/trees/frontend/sirius-components-trees/package.json
index 5e816d0c21d..6d0ac4c5b61 100644
--- a/packages/trees/frontend/sirius-components-trees/package.json
+++ b/packages/trees/frontend/sirius-components-trees/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-trees",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/validation/backend/pom.xml b/packages/validation/backend/pom.xml
index 472e32b1f71..fec7dc58e21 100644
--- a/packages/validation/backend/pom.xml
+++ b/packages/validation/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-validation-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-validation-root</name>
 	<description>Sirius Components Validation Root</description>
diff --git a/packages/validation/backend/sirius-components-collaborative-validation/pom.xml b/packages/validation/backend/sirius-components-collaborative-validation/pom.xml
index 021d3bd76bf..d40d02d2a81 100644
--- a/packages/validation/backend/sirius-components-collaborative-validation/pom.xml
+++ b/packages/validation/backend/sirius-components-collaborative-validation/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-collaborative-validation</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-collaborative-validation</name>
 	<description>Sirius Components Collaborative Validation</description>
 
@@ -36,12 +36,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-validation</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -51,13 +51,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/validation/backend/sirius-components-validation-graphql/pom.xml b/packages/validation/backend/sirius-components-validation-graphql/pom.xml
index baf18a67692..6dc90c84195 100644
--- a/packages/validation/backend/sirius-components-validation-graphql/pom.xml
+++ b/packages/validation/backend/sirius-components-validation-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-validation-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-validation-graphql</name>
 	<description>Sirius Components Validation GraphQL</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-validation</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/validation/backend/sirius-components-validation/pom.xml b/packages/validation/backend/sirius-components-validation/pom.xml
index 4e4c84f6a50..90f67fd3ecd 100644
--- a/packages/validation/backend/sirius-components-validation/pom.xml
+++ b/packages/validation/backend/sirius-components-validation/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-validation</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-validation</name>
 	<description>Sirius Components Validation</description>
 
@@ -37,12 +37,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-representations</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/validation/frontend/sirius-components-validation/package.json b/packages/validation/frontend/sirius-components-validation/package.json
index 77b2f8b0986..ec8ca5fc7c8 100644
--- a/packages/validation/frontend/sirius-components-validation/package.json
+++ b/packages/validation/frontend/sirius-components-validation/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@eclipse-sirius/sirius-components-validation",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "author": "Eclipse Sirius",
   "license": "EPL-2.0",
   "repository": {
diff --git a/packages/view/backend/pom.xml b/packages/view/backend/pom.xml
index 1dc8fde3262..00eedf0c331 100644
--- a/packages/view/backend/pom.xml
+++ b/packages/view/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-view-root</name>
 	<description>Sirius Components View Root</description>
diff --git a/packages/view/backend/sirius-components-view-builder-generator/pom.xml b/packages/view/backend/sirius-components-view-builder-generator/pom.xml
index 09db7b51bdf..5055a2fc2ab 100644
--- a/packages/view/backend/sirius-components-view-builder-generator/pom.xml
+++ b/packages/view/backend/sirius-components-view-builder-generator/pom.xml
@@ -18,12 +18,12 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-builder-generator</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-builder-generator</name>
 	<description>Sirius View Builder Generator</description>
 
@@ -68,57 +68,57 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-customnodes</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-customcells</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/view/backend/sirius-components-view-builder/pom.xml b/packages/view/backend/sirius-components-view-builder/pom.xml
index 2863d0d9049..e1cfea865dd 100644
--- a/packages/view/backend/sirius-components-view-builder/pom.xml
+++ b/packages/view/backend/sirius-components-view-builder/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-builder</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-builder</name>
 	<description>Sirius View Builder</description>
 
@@ -45,63 +45,63 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-customnodes</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-customcells</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-builder-generator</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/ConditionalDiagramStyleBuilder.java b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/ConditionalDiagramStyleBuilder.java
new file mode 100644
index 00000000000..3e9bf55f258
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/ConditionalDiagramStyleBuilder.java
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.builder.generated;
+
+/**
+ * Builder for ConditionalDiagramStyleBuilder.
+ *
+ * @author BuilderGenerator
+ * @generated
+ */
+public class ConditionalDiagramStyleBuilder {
+
+    /**
+     * Create instance org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle.
+     *
+     * @generated
+     */
+    private final org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle conditionalDiagramStyle = org.eclipse.sirius.components.view.diagram.DiagramFactory.eINSTANCE.createConditionalDiagramStyle();
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle.
+     *
+     * @generated
+     */
+    protected org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle getConditionalDiagramStyle() {
+        return this.conditionalDiagramStyle;
+    }
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle.
+     *
+     * @generated
+     */
+    public org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle build() {
+        return this.getConditionalDiagramStyle();
+    }
+
+    /**
+     * Setter for Condition.
+     *
+     * @generated
+     */
+    public ConditionalDiagramStyleBuilder condition(java.lang.String value) {
+        this.getConditionalDiagramStyle().setCondition(value);
+        return this;
+    }
+
+    /**
+     * Setter for Style.
+     *
+     * @generated
+     */
+    public ConditionalDiagramStyleBuilder style(org.eclipse.sirius.components.view.diagram.DiagramStyleDescription value) {
+        this.getConditionalDiagramStyle().setStyle(value);
+        return this;
+    }
+
+}
+
diff --git a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/DiagramStyleDescriptionBuilder.java b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/DiagramStyleDescriptionBuilder.java
new file mode 100644
index 00000000000..81a4ee5eebe
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/DiagramStyleDescriptionBuilder.java
@@ -0,0 +1,59 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.builder.generated;
+
+/**
+ * Builder for DiagramStyleDescriptionBuilder.
+ *
+ * @author BuilderGenerator
+ * @generated
+ */
+public class DiagramStyleDescriptionBuilder {
+
+    /**
+     * Create instance org.eclipse.sirius.components.view.diagram.DiagramStyleDescription.
+     *
+     * @generated
+     */
+    private final org.eclipse.sirius.components.view.diagram.DiagramStyleDescription diagramStyleDescription = org.eclipse.sirius.components.view.diagram.DiagramFactory.eINSTANCE.createDiagramStyleDescription();
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.DiagramStyleDescription.
+     *
+     * @generated
+     */
+    protected org.eclipse.sirius.components.view.diagram.DiagramStyleDescription getDiagramStyleDescription() {
+        return this.diagramStyleDescription;
+    }
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.DiagramStyleDescription.
+     *
+     * @generated
+     */
+    public org.eclipse.sirius.components.view.diagram.DiagramStyleDescription build() {
+        return this.getDiagramStyleDescription();
+    }
+
+    /**
+     * Setter for Background.
+     *
+     * @generated
+     */
+    public DiagramStyleDescriptionBuilder background(org.eclipse.sirius.components.view.UserColor value) {
+        this.getDiagramStyleDescription().setBackground(value);
+        return this;
+    }
+
+}
+
diff --git a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/ConditionalDiagramStyleBuilder.java b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/ConditionalDiagramStyleBuilder.java
new file mode 100644
index 00000000000..5d580816af8
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/ConditionalDiagramStyleBuilder.java
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.builder.generated.diagram;
+
+/**
+ * Builder for ConditionalDiagramStyleBuilder.
+ *
+ * @author BuilderGenerator
+ * @generated
+ */
+public class ConditionalDiagramStyleBuilder {
+
+    /**
+     * Create instance org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle.
+     *
+     * @generated
+     */
+    private org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle conditionalDiagramStyle = org.eclipse.sirius.components.view.diagram.DiagramFactory.eINSTANCE.createConditionalDiagramStyle();
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle.
+     *
+     * @generated
+     */
+    protected org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle getConditionalDiagramStyle() {
+        return this.conditionalDiagramStyle;
+    }
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle.
+     *
+     * @generated
+     */
+    public org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle build() {
+        return this.getConditionalDiagramStyle();
+    }
+
+    /**
+     * Setter for Condition.
+     *
+     * @generated
+     */
+    public ConditionalDiagramStyleBuilder condition(java.lang.String value) {
+        this.getConditionalDiagramStyle().setCondition(value);
+        return this;
+    }
+
+    /**
+     * Setter for Style.
+     *
+     * @generated
+     */
+    public ConditionalDiagramStyleBuilder style(org.eclipse.sirius.components.view.diagram.DiagramStyleDescription value) {
+        this.getConditionalDiagramStyle().setStyle(value);
+        return this;
+    }
+
+}
+
diff --git a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramBuilders.java b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramBuilders.java
index 50575e7690d..bb62c7dfad8 100644
--- a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramBuilders.java
+++ b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramBuilders.java
@@ -19,6 +19,7 @@
  * @generated
  */
 public class DiagramBuilders {
+
     /**
      * Instantiate a DiagramDescriptionBuilder .
      *
@@ -109,6 +110,16 @@ public OutsideLabelStyleBuilder newOutsideLabelStyle() {
         return new OutsideLabelStyleBuilder();
     }
 
+    /**
+     * Instantiate a DiagramStyleDescriptionBuilder .
+     *
+     * @author BuilderGenerator
+     * @generated
+     */
+    public DiagramStyleDescriptionBuilder newDiagramStyleDescription() {
+        return new DiagramStyleDescriptionBuilder();
+    }
+
     /**
      * Instantiate a ConditionalNodeStyleBuilder .
      *
@@ -119,6 +130,23 @@ public ConditionalNodeStyleBuilder newConditionalNodeStyle() {
         return new ConditionalNodeStyleBuilder();
     }
 
+    /**
+     * Instantiate a ConditionalDiagramStyleBuilder .
+     *
+     * @author BuilderGenerator
+     * @generated
+     */
+    public ConditionalDiagramStyleBuilder newConditionalDiagramStyle() {
+        return new ConditionalDiagramStyleBuilder();
+    }
+
+    /**
+     * Instantiate a ConditionalDiagramStyleBuilder .
+     *
+     * @author BuilderGenerator
+     * @generated
+     */
+
     /**
      * Instantiate a ConditionalInsideLabelStyleBuilder .
      *
diff --git a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramDescriptionBuilder.java b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramDescriptionBuilder.java
index 987ba967257..988f3dffc63 100644
--- a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramDescriptionBuilder.java
+++ b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramDescriptionBuilder.java
@@ -22,12 +22,14 @@ public class DiagramDescriptionBuilder {
 
     /**
      * Create instance org.eclipse.sirius.components.view.diagram.DiagramDescription.
+     *
      * @generated
      */
     private org.eclipse.sirius.components.view.diagram.DiagramDescription diagramDescription = org.eclipse.sirius.components.view.diagram.DiagramFactory.eINSTANCE.createDiagramDescription();
 
     /**
      * Return instance org.eclipse.sirius.components.view.diagram.DiagramDescription.
+     *
      * @generated
      */
     protected org.eclipse.sirius.components.view.diagram.DiagramDescription getDiagramDescription() {
@@ -36,6 +38,7 @@ protected org.eclipse.sirius.components.view.diagram.DiagramDescription getDiagr
 
     /**
      * Return instance org.eclipse.sirius.components.view.diagram.DiagramDescription.
+     *
      * @generated
      */
     public org.eclipse.sirius.components.view.diagram.DiagramDescription build() {
@@ -51,6 +54,7 @@ public DiagramDescriptionBuilder name(java.lang.String value) {
         this.getDiagramDescription().setName(value);
         return this;
     }
+
     /**
      * Setter for DomainType.
      *
@@ -60,6 +64,7 @@ public DiagramDescriptionBuilder domainType(java.lang.String value) {
         this.getDiagramDescription().setDomainType(value);
         return this;
     }
+
     /**
      * Setter for PreconditionExpression.
      *
@@ -69,6 +74,7 @@ public DiagramDescriptionBuilder preconditionExpression(java.lang.String value)
         this.getDiagramDescription().setPreconditionExpression(value);
         return this;
     }
+
     /**
      * Setter for TitleExpression.
      *
@@ -78,6 +84,7 @@ public DiagramDescriptionBuilder titleExpression(java.lang.String value) {
         this.getDiagramDescription().setTitleExpression(value);
         return this;
     }
+
     /**
      * Setter for IconExpression.
      *
@@ -115,6 +122,7 @@ public DiagramDescriptionBuilder palette(org.eclipse.sirius.components.view.diag
         this.getDiagramDescription().setPalette(value);
         return this;
     }
+
     /**
      * Setter for NodeDescriptions.
      *
@@ -169,5 +177,28 @@ public DiagramDescriptionBuilder groupPalette(org.eclipse.sirius.components.view
         return this;
     }
 
+    /**
+     * Setter for Style.
+     *
+     * @generated
+     */
+    public DiagramDescriptionBuilder style(org.eclipse.sirius.components.view.diagram.DiagramStyleDescription value) {
+        this.getDiagramDescription().setStyle(value);
+        return this;
+    }
+
+    /**
+     * Setter for ConditionalStyles.
+     *
+     * @generated
+     */
+    public DiagramDescriptionBuilder conditionalStyles(org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle ... values) {
+        for (org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle value : values) {
+            this.getDiagramDescription().getConditionalStyles().add(value);
+        }
+        return this;
+    }
+
+
 }
 
diff --git a/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramStyleDescriptionBuilder.java b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramStyleDescriptionBuilder.java
new file mode 100644
index 00000000000..2ee208a55d1
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-builder/src/main/java/org/eclipse/sirius/components/view/builder/generated/diagram/DiagramStyleDescriptionBuilder.java
@@ -0,0 +1,59 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.builder.generated.diagram;
+
+/**
+ * Builder for DiagramStyleDescriptionBuilder.
+ *
+ * @author BuilderGenerator
+ * @generated
+ */
+public class DiagramStyleDescriptionBuilder {
+
+    /**
+     * Create instance org.eclipse.sirius.components.view.diagram.DiagramStyleDescription.
+     *
+     * @generated
+     */
+    private org.eclipse.sirius.components.view.diagram.DiagramStyleDescription diagramStyleDescription = org.eclipse.sirius.components.view.diagram.DiagramFactory.eINSTANCE.createDiagramStyleDescription();
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.DiagramStyleDescription.
+     *
+     * @generated
+     */
+    protected org.eclipse.sirius.components.view.diagram.DiagramStyleDescription getDiagramStyleDescription() {
+        return this.diagramStyleDescription;
+    }
+
+    /**
+     * Return instance org.eclipse.sirius.components.view.diagram.DiagramStyleDescription.
+     *
+     * @generated
+     */
+    public org.eclipse.sirius.components.view.diagram.DiagramStyleDescription build() {
+        return this.getDiagramStyleDescription();
+    }
+
+    /**
+     * Setter for Background.
+     *
+     * @generated
+     */
+    public DiagramStyleDescriptionBuilder background(org.eclipse.sirius.components.view.UserColor value) {
+        this.getDiagramStyleDescription().setBackground(value);
+        return this;
+    }
+
+}
+
diff --git a/packages/view/backend/sirius-components-view-deck-edit/pom.xml b/packages/view/backend/sirius-components-view-deck-edit/pom.xml
index 7078b89c279..ceb6c56d90d 100644
--- a/packages/view/backend/sirius-components-view-deck-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-deck-edit/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-deck-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-deck-edit</name>
 	<description>Sirius Components Deck View Definition DSL - Edit Support</description>
 
@@ -36,17 +36,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-deck/pom.xml b/packages/view/backend/sirius-components-view-deck/pom.xml
index 8ebb581051d..efe0c92bf45 100644
--- a/packages/view/backend/sirius-components-view-deck/pom.xml
+++ b/packages/view/backend/sirius-components-view-deck/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-deck</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-deck</name>
 	<description>Sirius Components Deck View Definition DSL</description>
 
@@ -41,7 +41,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-diagram-customnodes-edit/pom.xml b/packages/view/backend/sirius-components-view-diagram-customnodes-edit/pom.xml
index 59c90083997..47d26162825 100644
--- a/packages/view/backend/sirius-components-view-diagram-customnodes-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-diagram-customnodes-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-diagram-customnodes-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-diagram-customnodes-edit</name>
 	<description>Support for additional custom nodes - edit support</description>
 
@@ -47,12 +47,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-customnodes</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-diagram-customnodes/pom.xml b/packages/view/backend/sirius-components-view-diagram-customnodes/pom.xml
index a7d0abc8cc6..c02d9c3a866 100644
--- a/packages/view/backend/sirius-components-view-diagram-customnodes/pom.xml
+++ b/packages/view/backend/sirius-components-view-diagram-customnodes/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-diagram-customnodes</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-diagram-customnodes</name>
 	<description>Support for additional custom nodes</description>
 
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-diagram-edit/pom.xml b/packages/view/backend/sirius-components-view-diagram-edit/pom.xml
index 1c759ef779b..53693158069 100644
--- a/packages/view/backend/sirius-components-view-diagram-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-diagram-edit/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-diagram-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-diagram-edit</name>
 	<description>Sirius Components Diagram View Definition DSL - Edit Support</description>
 
@@ -41,12 +41,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/ConditionalDiagramStyleItemProvider.java b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/ConditionalDiagramStyleItemProvider.java
new file mode 100644
index 00000000000..6c709295dfa
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/ConditionalDiagramStyleItemProvider.java
@@ -0,0 +1,152 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.diagram.provider;
+
+import java.util.Collection;
+import java.util.List;
+
+import org.eclipse.emf.common.notify.AdapterFactory;
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.ecore.EStructuralFeature;
+import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
+import org.eclipse.emf.edit.provider.ViewerNotification;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
+import org.eclipse.sirius.components.view.diagram.DiagramFactory;
+import org.eclipse.sirius.components.view.diagram.DiagramPackage;
+import org.eclipse.sirius.components.view.provider.ConditionalItemProvider;
+
+/**
+ * This is the item provider adapter for a {@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle}
+ * object. <!-- begin-user-doc --> <!-- end-user-doc -->
+ *
+ * @generated
+ */
+public class ConditionalDiagramStyleItemProvider extends ConditionalItemProvider {
+
+    /**
+     * This constructs an instance from a factory and a notifier. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    public ConditionalDiagramStyleItemProvider(AdapterFactory adapterFactory) {
+        super(adapterFactory);
+    }
+
+    /**
+     * This returns the property descriptors for the adapted class. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
+        if (this.itemPropertyDescriptors == null) {
+            super.getPropertyDescriptors(object);
+
+        }
+        return this.itemPropertyDescriptors;
+    }
+
+    /**
+     * This specifies how to implement {@link #getChildren} and is used to deduce an appropriate feature for an
+     * {@link org.eclipse.emf.edit.command.AddCommand}, {@link org.eclipse.emf.edit.command.RemoveCommand} or
+     * {@link org.eclipse.emf.edit.command.MoveCommand} in {@link #createCommand}. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public Collection<? extends EStructuralFeature> getChildrenFeatures(Object object) {
+        if (this.childrenFeatures == null) {
+            super.getChildrenFeatures(object);
+            this.childrenFeatures.add(DiagramPackage.Literals.CONDITIONAL_DIAGRAM_STYLE__STYLE);
+        }
+        return this.childrenFeatures;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    protected EStructuralFeature getChildFeature(Object object, Object child) {
+        // Check the type of the specified child object and return the proper feature to use for
+        // adding (see {@link AddCommand}) it as a child.
+
+        return super.getChildFeature(object, child);
+    }
+
+    /**
+     * This returns ConditionalDiagramStyle.gif. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated NOT
+     */
+    @Override
+    public Object getImage(Object object) {
+        return this.overlayImage(object, this.getResourceLocator().getImage("full/obj16/ConditionalStyle.svg"));
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    protected boolean shouldComposeCreationImage() {
+        return true;
+    }
+
+    /**
+     * This returns the label text for the adapted class. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public String getText(Object object) {
+        String label = ((ConditionalDiagramStyle) object).getCondition();
+        return label == null || label.length() == 0 ? this.getString("_UI_ConditionalDiagramStyle_type") : this.getString("_UI_ConditionalDiagramStyle_type") + " " + label;
+    }
+
+    /**
+     * This handles model notifications by calling {@link #updateChildren} to update any cached children and by creating
+     * a viewer notification, which it passes to {@link #fireNotifyChanged}. <!-- begin-user-doc --> <!-- end-user-doc
+     * -->
+     *
+     * @generated
+     */
+    @Override
+    public void notifyChanged(Notification notification) {
+        this.updateChildren(notification);
+
+        switch (notification.getFeatureID(ConditionalDiagramStyle.class)) {
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE:
+                this.fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
+                return;
+        }
+        super.notifyChanged(notification);
+    }
+
+    /**
+     * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children that can be created
+     * under this object. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
+        super.collectNewChildDescriptors(newChildDescriptors, object);
+
+        newChildDescriptors.add(this.createChildParameter(DiagramPackage.Literals.CONDITIONAL_DIAGRAM_STYLE__STYLE, DiagramFactory.eINSTANCE.createDiagramStyleDescription()));
+    }
+
+}
diff --git a/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramDescriptionItemProvider.java b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramDescriptionItemProvider.java
index 1f25793b9c0..fdd6f7dbfbc 100644
--- a/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramDescriptionItemProvider.java
+++ b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramDescriptionItemProvider.java
@@ -106,6 +106,8 @@ public Collection<? extends EStructuralFeature> getChildrenFeatures(Object objec
             this.childrenFeatures.add(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__GROUP_PALETTE);
             this.childrenFeatures.add(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__NODE_DESCRIPTIONS);
             this.childrenFeatures.add(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__EDGE_DESCRIPTIONS);
+            this.childrenFeatures.add(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__STYLE);
+            this.childrenFeatures.add(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES);
         }
         return this.childrenFeatures;
     }
@@ -175,6 +177,8 @@ public void notifyChanged(Notification notification) {
             case DiagramPackage.DIAGRAM_DESCRIPTION__GROUP_PALETTE:
             case DiagramPackage.DIAGRAM_DESCRIPTION__NODE_DESCRIPTIONS:
             case DiagramPackage.DIAGRAM_DESCRIPTION__EDGE_DESCRIPTIONS:
+            case DiagramPackage.DIAGRAM_DESCRIPTION__STYLE:
+            case DiagramPackage.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES:
                 this.fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
                 return;
         }
@@ -193,6 +197,8 @@ protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors
         DefaultToolsFactory defaultToolsFactory = new DefaultToolsFactory();
 
         newChildDescriptors.add(this.createChildParameter(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__TOOLBAR, DiagramFactory.eINSTANCE.createDiagramToolbar()));
+        newChildDescriptors.add(this.createChildParameter(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__STYLE, DiagramFactory.eINSTANCE.createDiagramStyleDescription()));
+        newChildDescriptors.add(this.createChildParameter(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES, DiagramFactory.eINSTANCE.createConditionalDiagramStyle()));
         newChildDescriptors.add(this.createChildParameter(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__PALETTE, defaultToolsFactory.createDefaultDiagramPalette()));
         newChildDescriptors.add(this.createChildParameter(DiagramPackage.Literals.DIAGRAM_DESCRIPTION__GROUP_PALETTE, DiagramFactory.eINSTANCE.createGroupPalette()));
 
diff --git a/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramItemProviderAdapterFactory.java b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramItemProviderAdapterFactory.java
index e44763ba0d2..736fc2ba287 100644
--- a/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramItemProviderAdapterFactory.java
+++ b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramItemProviderAdapterFactory.java
@@ -372,6 +372,40 @@ public class DiagramItemProviderAdapterFactory extends DiagramAdapterFactory imp
      */
     protected DropNodeToolItemProvider dropNodeToolItemProvider;
 
+    /**
+     * This keeps track of the one adapter used for all
+     * {@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription} instances. <!-- begin-user-doc -->
+     * <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    protected DiagramStyleDescriptionItemProvider diagramStyleDescriptionItemProvider;
+
+    /**
+     * This keeps track of the one adapter used for all
+     * {@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle} instances. <!-- begin-user-doc -->
+     * <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    protected ConditionalDiagramStyleItemProvider conditionalDiagramStyleItemProvider;
+    /**
+     * This keeps track of the one adapter used for all
+     * {@link org.eclipse.sirius.components.view.diagram.SelectionDialogDescription} instances. <!-- begin-user-doc -->
+     * <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    protected SelectionDialogDescriptionItemProvider selectionDialogDescriptionItemProvider;
+    /**
+     * This keeps track of the one adapter used for all
+     * {@link org.eclipse.sirius.components.view.diagram.SelectionDialogTreeDescription} instances. <!-- begin-user-doc
+     * --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    protected SelectionDialogTreeDescriptionItemProvider selectionDialogTreeDescriptionItemProvider;
+
     /**
      * This constructs an instance. <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -521,6 +555,21 @@ public Adapter createOutsideLabelStyleAdapter() {
         return this.outsideLabelStyleItemProvider;
     }
 
+    /**
+     * This creates an adapter for a {@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription}. <!--
+     * begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public Adapter createDiagramStyleDescriptionAdapter() {
+        if (this.diagramStyleDescriptionItemProvider == null) {
+            this.diagramStyleDescriptionItemProvider = new DiagramStyleDescriptionItemProvider(this);
+        }
+
+        return this.diagramStyleDescriptionItemProvider;
+    }
+
     /**
      * This creates an adapter for a {@link org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle}. <!--
      * begin-user-doc --> <!-- end-user-doc -->
@@ -536,6 +585,21 @@ public Adapter createConditionalNodeStyleAdapter() {
         return this.conditionalNodeStyleItemProvider;
     }
 
+    /**
+     * This creates an adapter for a {@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle}. <!--
+     * begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public Adapter createConditionalDiagramStyleAdapter() {
+        if (this.conditionalDiagramStyleItemProvider == null) {
+            this.conditionalDiagramStyleItemProvider = new ConditionalDiagramStyleItemProvider(this);
+        }
+
+        return this.conditionalDiagramStyleItemProvider;
+    }
+
     /**
      * This creates an adapter for a {@link org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle}.
      * <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -844,15 +908,6 @@ public Adapter createDeleteViewAdapter() {
         return this.deleteViewItemProvider;
     }
 
-    /**
-     * This keeps track of the one adapter used for all
-     * {@link org.eclipse.sirius.components.view.diagram.SelectionDialogDescription} instances. <!-- begin-user-doc -->
-     * <!-- end-user-doc -->
-     *
-     * @generated
-     */
-    protected SelectionDialogDescriptionItemProvider selectionDialogDescriptionItemProvider;
-
     /**
      * This creates an adapter for a {@link org.eclipse.sirius.components.view.diagram.SelectionDialogDescription}. <!--
      * begin-user-doc --> <!-- end-user-doc -->
@@ -928,15 +983,6 @@ public Adapter createDropNodeToolAdapter() {
         return this.dropNodeToolItemProvider;
     }
 
-    /**
-     * This keeps track of the one adapter used for all
-     * {@link org.eclipse.sirius.components.view.diagram.SelectionDialogTreeDescription} instances. <!-- begin-user-doc
-     * --> <!-- end-user-doc -->
-     *
-     * @generated
-     */
-    protected SelectionDialogTreeDescriptionItemProvider selectionDialogTreeDescriptionItemProvider;
-
     /**
      * This creates an adapter for a {@link org.eclipse.sirius.components.view.diagram.SelectionDialogTreeDescription}.
      * <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -1146,8 +1192,12 @@ public void dispose() {
             this.insideLabelStyleItemProvider.dispose();
         if (this.outsideLabelStyleItemProvider != null)
             this.outsideLabelStyleItemProvider.dispose();
+        if (this.diagramStyleDescriptionItemProvider != null)
+            this.diagramStyleDescriptionItemProvider.dispose();
         if (this.conditionalNodeStyleItemProvider != null)
             this.conditionalNodeStyleItemProvider.dispose();
+        if (this.conditionalDiagramStyleItemProvider != null)
+            this.conditionalDiagramStyleItemProvider.dispose();
         if (this.conditionalInsideLabelStyleItemProvider != null)
             this.conditionalInsideLabelStyleItemProvider.dispose();
         if (this.conditionalOutsideLabelStyleItemProvider != null)
@@ -1278,6 +1328,7 @@ public Object caseView(View object) {
                 DiagramDescription newDiagramDescription = DiagramFactory.eINSTANCE.createDiagramDescription();
                 newDiagramDescription.setName("New Diagram Description");
                 newDiagramDescription.setPalette(new DefaultToolsFactory().createDefaultDiagramPalette());
+                newDiagramDescription.setStyle(DiagramFactory.eINSTANCE.createDiagramStyleDescription());
                 this.newChildDescriptors.add(this.createChildParameter(ViewPackage.Literals.VIEW__DESCRIPTIONS, newDiagramDescription));
 
                 return null;
diff --git a/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramStyleDescriptionItemProvider.java b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramStyleDescriptionItemProvider.java
new file mode 100644
index 00000000000..48d0aed7e91
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-diagram-edit/src/main/java/org/eclipse/sirius/components/view/diagram/provider/DiagramStyleDescriptionItemProvider.java
@@ -0,0 +1,141 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.diagram.provider;
+
+import java.util.Collection;
+import java.util.List;
+
+import org.eclipse.emf.common.notify.AdapterFactory;
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.common.util.ResourceLocator;
+import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
+import org.eclipse.emf.edit.provider.IChildCreationExtender;
+import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
+import org.eclipse.emf.edit.provider.IItemLabelProvider;
+import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
+import org.eclipse.emf.edit.provider.IItemPropertySource;
+import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
+import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
+import org.eclipse.emf.edit.provider.ItemProviderAdapter;
+import org.eclipse.sirius.components.view.diagram.DiagramPackage;
+
+/**
+ * This is the item provider adapter for a {@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription}
+ * object. <!-- begin-user-doc --> <!-- end-user-doc -->
+ *
+ * @generated
+ */
+public class DiagramStyleDescriptionItemProvider extends ItemProviderAdapter
+        implements IEditingDomainItemProvider, IStructuredItemContentProvider, ITreeItemContentProvider, IItemLabelProvider, IItemPropertySource {
+
+    /**
+     * This constructs an instance from a factory and a notifier. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    public DiagramStyleDescriptionItemProvider(AdapterFactory adapterFactory) {
+        super(adapterFactory);
+    }
+
+    /**
+     * This returns the property descriptors for the adapted class. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
+        if (this.itemPropertyDescriptors == null) {
+            super.getPropertyDescriptors(object);
+
+            this.addBackgroundPropertyDescriptor(object);
+        }
+        return this.itemPropertyDescriptors;
+    }
+
+    /**
+     * This adds a property descriptor for the Background feature. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    protected void addBackgroundPropertyDescriptor(Object object) {
+        this.itemPropertyDescriptors.add(this.createItemPropertyDescriptor(((ComposeableAdapterFactory) this.adapterFactory).getRootAdapterFactory(), this.getResourceLocator(),
+                this.getString("_UI_DiagramStyleDescription_background_feature"),
+                this.getString("_UI_PropertyDescriptor_description", "_UI_DiagramStyleDescription_background_feature", "_UI_DiagramStyleDescription_type"),
+                DiagramPackage.Literals.DIAGRAM_STYLE_DESCRIPTION__BACKGROUND, true, false, true, null, null, null));
+    }
+
+    /**
+     * This returns DiagramStyleDescription.gif. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated NOT
+     */
+    @Override
+    public Object getImage(Object object) {
+        return this.overlayImage(object, this.getResourceLocator().getImage("full/obj16/Style.svg"));
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    protected boolean shouldComposeCreationImage() {
+        return true;
+    }
+
+    /**
+     * This returns the label text for the adapted class. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public String getText(Object object) {
+        return this.getString("_UI_DiagramStyleDescription_type");
+    }
+
+    /**
+     * This handles model notifications by calling {@link #updateChildren} to update any cached children and by creating
+     * a viewer notification, which it passes to {@link #fireNotifyChanged}. <!-- begin-user-doc --> <!-- end-user-doc
+     * -->
+     *
+     * @generated
+     */
+    @Override
+    public void notifyChanged(Notification notification) {
+        this.updateChildren(notification);
+        super.notifyChanged(notification);
+    }
+
+    /**
+     * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children that can be created
+     * under this object. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
+        super.collectNewChildDescriptors(newChildDescriptors, object);
+    }
+
+    /**
+     * Return the resource locator for this item provider's resources. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public ResourceLocator getResourceLocator() {
+        return ((IChildCreationExtender) this.adapterFactory).getResourceLocator();
+    }
+
+}
diff --git a/packages/view/backend/sirius-components-view-diagram-edit/src/main/resources/plugin.properties b/packages/view/backend/sirius-components-view-diagram-edit/src/main/resources/plugin.properties
index fbc7fe262eb..6584d444edf 100644
--- a/packages/view/backend/sirius-components-view-diagram-edit/src/main/resources/plugin.properties
+++ b/packages/view/backend/sirius-components-view-diagram-edit/src/main/resources/plugin.properties
@@ -38,7 +38,9 @@ _UI_InsideLabelStyle_type=Inside Label Style
 _UI_OutsideLabelStyle_type=Outside Label Style
 _UI_NodeLabelStyle_type=Node Label Style
 _UI_NodeStyleDescription_type=Node Style Description
+_UI_DiagramStyleDescription_type=Diagram Style Description
 _UI_ConditionalNodeStyle_type=Conditional Node Style
+_UI_ConditionalDiagramStyle_type=Conditional Diagram Style
 _UI_ConditionalInsideLabelStyle_type=Conditional Inside Label Style
 _UI_ConditionalOutsideLabelStyle_type=Conditional Outside Label Style
 _UI_RectangularNodeStyleDescription_type=Rectangular Node Style Description
@@ -77,6 +79,8 @@ _UI_DiagramDescription_autoLayout_feature=Auto Layout
 _UI_DiagramDescription_toolbar_feature=Toolbar
 _UI_DiagramDescription_palette_feature=Palette
 _UI_DiagramDescription_groupPalette_feature=Group Palette
+_UI_DiagramDescription_style_feature=Style
+_UI_DiagramDescription_conditionalStyles_feature=Conditional Styles
 _UI_GroupPalette_nodeTools_feature=Node Tools
 _UI_GroupPalette_quickAccessTools_feature=Quick Access Node Tools
 _UI_GroupPalette_toolSections_feature=Tool sections
@@ -119,10 +123,10 @@ _UI_EdgeDescription_sourceExpression_feature=Source Expression
 _UI_EdgeDescription_targetExpression_feature=Target Expression
 _UI_EdgeDescription_style_feature=Style
 _UI_EdgeDescription_conditionalStyles_feature=Conditional Styles
-_UI_LayoutStrategyDescription_onWestAtCreationBorderNodes_feature = On West At Creation Border Nodes
-_UI_LayoutStrategyDescription_onEastAtCreationBorderNodes_feature = On East At Creation Border Nodes
-_UI_LayoutStrategyDescription_onNorthAtCreationBorderNodes_feature = On North At Creation Border Nodes
-_UI_LayoutStrategyDescription_onSouthAtCreationBorderNodes_feature = On South At Creation Border Nodes
+_UI_LayoutStrategyDescription_onWestAtCreationBorderNodes_feature=On West At Creation Border Nodes
+_UI_LayoutStrategyDescription_onEastAtCreationBorderNodes_feature=On East At Creation Border Nodes
+_UI_LayoutStrategyDescription_onNorthAtCreationBorderNodes_feature=On North At Creation Border Nodes
+_UI_LayoutStrategyDescription_onSouthAtCreationBorderNodes_feature=On South At Creation Border Nodes
 _UI_ListLayoutStrategyDescription_areChildNodesDraggableExpression_feature=Are Child Nodes Draggable Expression
 _UI_ListLayoutStrategyDescription_topGapExpression_feature=Top Gap Expression
 _UI_ListLayoutStrategyDescription_bottomGapExpression_feature=Bottom Gap Expression
@@ -148,9 +152,11 @@ _UI_NodeLabelStyle_background_feature=Background
 _UI_NodeLabelStyle_showIconExpression_feature=Show Icon Expression
 _UI_NodeLabelStyle_labelIcon_feature=Label Icon
 _UI_NodeLabelStyle_maxWidthExpression_feature=Max Width Expression
+_UI_DiagramStyleDescription_background_feature=Background
 _UI_NodeStyleDescription_childrenLayoutStrategy_feature=Children Layout Strategy
 _UI_NodeStyleDescription_description_feature=Description
 _UI_ConditionalNodeStyle_style_feature=Style
+_UI_ConditionalDiagramStyle_style_feature=Style
 _UI_ConditionalInsideLabelStyle_style_feature=Style
 _UI_ConditionalOutsideLabelStyle_style_feature=Style
 _UI_RectangularNodeStyleDescription_background_feature=Background
@@ -201,7 +207,7 @@ _UI_NodeTool_dialogDescription_feature=Dialog Description
 _UI_NodeTool_iconURLsExpression_feature=Icon URLs Expression
 _UI_NodeTool_elementsToSelectExpression_feature=Elements To Select Expression
 _UI_NodeTool_withImpactAnalysis_feature=With Impact Analysis
-_UI_NodeTool_keyBindings_feature = Key Bindings
+_UI_NodeTool_keyBindings_feature=Key Bindings
 _UI_CreateView_parentViewExpression_feature=Parent View Expression
 _UI_CreateView_elementDescription_feature=Element Description
 _UI_CreateView_semanticElementExpression_feature=Semantic Element Expression
@@ -247,7 +253,7 @@ _UI_ArrowStyle_FillCircle_literal=FillCircle
 _UI_ArrowStyle_CrossedCircle_literal=CrossedCircle
 _UI_ArrowStyle_ClosedArrowWithVerticalBar_literal=ClosedArrowWithVerticalBar
 _UI_ArrowStyle_ClosedArrowWithDots_literal=ClosedArrowWithDots
-_UI_ArrowStyle_ClosedArrowWith4Dots_literal = ClosedArrowWith4Dots
+_UI_ArrowStyle_ClosedArrowWith4Dots_literal=ClosedArrowWith4Dots
 _UI_LayoutDirection_Column_literal=Column
 _UI_LineStyle_Solid_literal=Solid
 _UI_LineStyle_Dash_literal=Dash
diff --git a/packages/view/backend/sirius-components-view-diagram/pom.xml b/packages/view/backend/sirius-components-view-diagram/pom.xml
index 9361a7f32bf..c74de6d2092 100644
--- a/packages/view/backend/sirius-components-view-diagram/pom.xml
+++ b/packages/view/backend/sirius-components-view-diagram/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-diagram</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-diagram</name>
 	<description>Sirius Components Diagram View Definition DSL</description>
 
@@ -41,7 +41,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/ConditionalDiagramStyle.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/ConditionalDiagramStyle.java
new file mode 100644
index 00000000000..50355882e8b
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/ConditionalDiagramStyle.java
@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.diagram;
+
+import org.eclipse.sirius.components.view.Conditional;
+
+/**
+ * <!-- begin-user-doc --> A representation of the model object '<em><b>Conditional Diagram Style</b></em>'. <!--
+ * end-user-doc -->
+ *
+ * <p>
+ * The following features are supported:
+ * </p>
+ * <ul>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle#getStyle <em>Style</em>}</li>
+ * </ul>
+ *
+ * @model
+ * @generated
+ * @see org.eclipse.sirius.components.view.diagram.DiagramPackage#getConditionalDiagramStyle()
+ */
+public interface ConditionalDiagramStyle extends Conditional {
+
+    /**
+     * Returns the value of the '<em><b>Style</b></em>' containment reference. <!-- begin-user-doc --> <!-- end-user-doc
+     * -->
+     *
+     * @return the value of the '<em>Style</em>' containment reference.
+     * @model containment="true"
+     * @generated
+     * @see #setStyle(DiagramStyleDescription)
+     * @see org.eclipse.sirius.components.view.diagram.DiagramPackage#getConditionalDiagramStyle_Style()
+     */
+    DiagramStyleDescription getStyle();
+
+    /**
+     * Sets the value of the '{@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle#getStyle
+     * <em>Style</em>}' containment reference. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @param value
+     *         the new value of the '<em>Style</em>' containment reference.
+     * @generated
+     * @see #getStyle()
+     */
+    void setStyle(DiagramStyleDescription value);
+
+} // ConditionalDiagramStyle
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramDescription.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramDescription.java
index 4769cec3643..bcfc559aa58 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramDescription.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramDescription.java
@@ -32,6 +32,9 @@
  * Descriptions</em>}</li>
  * <li>{@link org.eclipse.sirius.components.view.diagram.DiagramDescription#getArrangeLayoutDirection <em>Arrange Layout
  * Direction</em>}</li>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.DiagramDescription#getStyle <em>Style</em>}</li>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.DiagramDescription#getConditionalStyles <em>Conditional
+ * Styles</em>}</li>
  * </ul>
  *
  * @see org.eclipse.sirius.components.view.diagram.DiagramPackage#getDiagramDescription()
@@ -160,6 +163,41 @@ public interface DiagramDescription extends RepresentationDescription {
      */
     void setArrangeLayoutDirection(ArrangeLayoutDirection value);
 
+    /**
+     * Returns the value of the '<em><b>Style</b></em>' containment reference. <!-- begin-user-doc --> <!-- end-user-doc
+     * -->
+     *
+     * @return the value of the '<em>Style</em>' containment reference.
+     * @see #setStyle(DiagramStyleDescription)
+     * @see org.eclipse.sirius.components.view.diagram.DiagramPackage#getDiagramDescription_Style()
+     * @model containment="true"
+     * @generated
+     */
+    DiagramStyleDescription getStyle();
+
+    /**
+     * Sets the value of the '{@link org.eclipse.sirius.components.view.diagram.DiagramDescription#getStyle
+     * <em>Style</em>}' containment reference. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @param value
+     *            the new value of the '<em>Style</em>' containment reference.
+     * @see #getStyle()
+     * @generated
+     */
+    void setStyle(DiagramStyleDescription value);
+
+    /**
+     * Returns the value of the '<em><b>Conditional Styles</b></em>' containment reference list. The list contents are
+     * of type {@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle}. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @return the value of the '<em>Conditional Styles</em>' containment reference list.
+     * @see org.eclipse.sirius.components.view.diagram.DiagramPackage#getDiagramDescription_ConditionalStyles()
+     * @model containment="true"
+     * @generated
+     */
+    EList<ConditionalDiagramStyle> getConditionalStyles();
+
     /**
      * Returns the value of the '<em><b>Group Palette</b></em>' containment reference. <!-- begin-user-doc --> <!--
      * end-user-doc -->
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramFactory.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramFactory.java
index 94d4cfcc656..2d4751b6c0a 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramFactory.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramFactory.java
@@ -104,6 +104,14 @@ public interface DiagramFactory extends EFactory {
      */
     OutsideLabelStyle createOutsideLabelStyle();
 
+    /**
+     * Returns a new object of class '<em>Style Description</em>'. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return a new object of class '<em>Style Description</em>'.
+     * @generated
+     */
+    DiagramStyleDescription createDiagramStyleDescription();
+
     /**
      * Returns a new object of class '<em>Conditional Node Style</em>'. <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -112,6 +120,14 @@ public interface DiagramFactory extends EFactory {
      */
     ConditionalNodeStyle createConditionalNodeStyle();
 
+    /**
+     * Returns a new object of class '<em>Conditional Diagram Style</em>'. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return a new object of class '<em>Conditional Diagram Style</em>'.
+     * @generated
+     */
+    ConditionalDiagramStyle createConditionalDiagramStyle();
+
     /**
      * Returns a new object of class '<em>Conditional Inside Label Style</em>'. <!-- begin-user-doc --> <!--
      * end-user-doc -->
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramPackage.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramPackage.java
index ce3b4b147ce..01542d56568 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramPackage.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramPackage.java
@@ -179,6 +179,24 @@ public interface DiagramPackage extends EPackage {
      */
     int DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION = ViewPackage.REPRESENTATION_DESCRIPTION_FEATURE_COUNT + 6;
 
+    /**
+     * The feature id for the '<em><b>Style</b></em>' containment reference. <!-- begin-user-doc --> <!-- end-user-doc
+     * -->
+     *
+     * @generated
+     * @ordered
+     */
+    int DIAGRAM_DESCRIPTION__STYLE = ViewPackage.REPRESENTATION_DESCRIPTION_FEATURE_COUNT + 7;
+
+    /**
+     * The feature id for the '<em><b>Conditional Styles</b></em>' containment reference list. <!-- begin-user-doc -->
+     * <!-- end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     */
+    int DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES = ViewPackage.REPRESENTATION_DESCRIPTION_FEATURE_COUNT + 8;
+
     /**
      * The number of structural features of the '<em>Description</em>' class. <!-- begin-user-doc --> <!-- end-user-doc
      * -->
@@ -186,7 +204,7 @@ public interface DiagramPackage extends EPackage {
      * @generated
      * @ordered
      */
-    int DIAGRAM_DESCRIPTION_FEATURE_COUNT = ViewPackage.REPRESENTATION_DESCRIPTION_FEATURE_COUNT + 7;
+    int DIAGRAM_DESCRIPTION_FEATURE_COUNT = ViewPackage.REPRESENTATION_DESCRIPTION_FEATURE_COUNT + 9;
 
     /**
      * The number of operations of the '<em>Description</em>' class. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -1750,6 +1768,41 @@ public interface DiagramPackage extends EPackage {
      */
     int NODE_STYLE_DESCRIPTION_OPERATION_COUNT = BORDER_STYLE_OPERATION_COUNT + 0;
 
+    /**
+     * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.impl.DiagramStyleDescriptionImpl
+     * <em>Style Description</em>}' class. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @see org.eclipse.sirius.components.view.diagram.impl.DiagramStyleDescriptionImpl
+     * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDiagramStyleDescription()
+     * @generated
+     */
+    int DIAGRAM_STYLE_DESCRIPTION = 16;
+
+    /**
+     * The feature id for the '<em><b>Background</b></em>' reference. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     */
+    int DIAGRAM_STYLE_DESCRIPTION__BACKGROUND = 0;
+
+    /**
+     * The number of structural features of the '<em>Style Description</em>' class. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     */
+    int DIAGRAM_STYLE_DESCRIPTION_FEATURE_COUNT = 1;
+
+    /**
+     * The number of operations of the '<em>Style Description</em>' class. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     */
+    int DIAGRAM_STYLE_DESCRIPTION_OPERATION_COUNT = 0;
+
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.impl.ConditionalNodeStyleImpl
      * <em>Conditional Node Style</em>}' class. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -1758,7 +1811,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getConditionalNodeStyle()
      * @generated
      */
-    int CONDITIONAL_NODE_STYLE = 16;
+    int CONDITIONAL_NODE_STYLE = 17;
 
     /**
      * The feature id for the '<em><b>Condition</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -1795,6 +1848,51 @@ public interface DiagramPackage extends EPackage {
      */
     int CONDITIONAL_NODE_STYLE_OPERATION_COUNT = ViewPackage.CONDITIONAL_OPERATION_COUNT + 0;
 
+    /**
+     * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.impl.ConditionalDiagramStyleImpl
+     * <em>Conditional Diagram Style</em>}' class. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @see org.eclipse.sirius.components.view.diagram.impl.ConditionalDiagramStyleImpl
+     * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getConditionalDiagramStyle()
+     * @generated
+     */
+    int CONDITIONAL_DIAGRAM_STYLE = 18;
+
+    /**
+     * The feature id for the '<em><b>Condition</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     */
+    int CONDITIONAL_DIAGRAM_STYLE__CONDITION = ViewPackage.CONDITIONAL__CONDITION;
+
+    /**
+     * The feature id for the '<em><b>Style</b></em>' containment reference. <!-- begin-user-doc --> <!-- end-user-doc
+     * -->
+     *
+     * @generated
+     * @ordered
+     */
+    int CONDITIONAL_DIAGRAM_STYLE__STYLE = ViewPackage.CONDITIONAL_FEATURE_COUNT + 0;
+
+    /**
+     * The number of structural features of the '<em>Conditional Diagram Style</em>' class. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     */
+    int CONDITIONAL_DIAGRAM_STYLE_FEATURE_COUNT = ViewPackage.CONDITIONAL_FEATURE_COUNT + 1;
+
+    /**
+     * The number of operations of the '<em>Conditional Diagram Style</em>' class. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     */
+    int CONDITIONAL_DIAGRAM_STYLE_OPERATION_COUNT = ViewPackage.CONDITIONAL_OPERATION_COUNT + 0;
+
     /**
      * The meta object id for the
      * '{@link org.eclipse.sirius.components.view.diagram.impl.ConditionalInsideLabelStyleImpl <em>Conditional Inside
@@ -1804,7 +1902,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getConditionalInsideLabelStyle()
      * @generated
      */
-    int CONDITIONAL_INSIDE_LABEL_STYLE = 17;
+    int CONDITIONAL_INSIDE_LABEL_STYLE = 19;
 
     /**
      * The feature id for the '<em><b>Condition</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -1850,7 +1948,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getConditionalOutsideLabelStyle()
      * @generated
      */
-    int CONDITIONAL_OUTSIDE_LABEL_STYLE = 18;
+    int CONDITIONAL_OUTSIDE_LABEL_STYLE = 20;
 
     /**
      * The feature id for the '<em><b>Condition</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -2133,7 +2231,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getRectangularNodeStyleDescription()
      * @generated
      */
-    int RECTANGULAR_NODE_STYLE_DESCRIPTION = 19;
+    int RECTANGULAR_NODE_STYLE_DESCRIPTION = 21;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.impl.ImageNodeStyleDescriptionImpl
@@ -2143,7 +2241,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getImageNodeStyleDescription()
      * @generated
      */
-    int IMAGE_NODE_STYLE_DESCRIPTION = 20;
+    int IMAGE_NODE_STYLE_DESCRIPTION = 22;
 
     /**
      * The meta object id for the
@@ -2154,7 +2252,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getIconLabelNodeStyleDescription()
      * @generated
      */
-    int ICON_LABEL_NODE_STYLE_DESCRIPTION = 21;
+    int ICON_LABEL_NODE_STYLE_DESCRIPTION = 23;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.impl.EdgeStyleImpl <em>Edge
@@ -2164,7 +2262,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getEdgeStyle()
      * @generated
      */
-    int EDGE_STYLE = 22;
+    int EDGE_STYLE = 24;
 
     /**
      * The feature id for the '<em><b>Color</b></em>' reference. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -2355,7 +2453,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getConditionalEdgeStyle()
      * @generated
      */
-    int CONDITIONAL_EDGE_STYLE = 23;
+    int CONDITIONAL_EDGE_STYLE = 25;
 
     /**
      * The feature id for the '<em><b>Condition</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -2555,7 +2653,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDiagramPalette()
      * @generated
      */
-    int DIAGRAM_PALETTE = 24;
+    int DIAGRAM_PALETTE = 26;
 
     /**
      * The feature id for the '<em><b>Drop Tool</b></em>' containment reference. <!-- begin-user-doc --> <!--
@@ -2626,7 +2724,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getGroupPalette()
      * @generated
      */
-    int GROUP_PALETTE = 25;
+    int GROUP_PALETTE = 27;
 
     /**
      * The feature id for the '<em><b>Node Tools</b></em>' containment reference list. <!-- begin-user-doc --> <!--
@@ -2680,7 +2778,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getNodePalette()
      * @generated
      */
-    int NODE_PALETTE = 26;
+    int NODE_PALETTE = 28;
 
     /**
      * The feature id for the '<em><b>Delete Tool</b></em>' containment reference. <!-- begin-user-doc --> <!--
@@ -2770,7 +2868,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getEdgePalette()
      * @generated
      */
-    int EDGE_PALETTE = 27;
+    int EDGE_PALETTE = 29;
 
     /**
      * The feature id for the '<em><b>Delete Tool</b></em>' containment reference. <!-- begin-user-doc --> <!--
@@ -2878,7 +2976,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getTool()
      * @generated
      */
-    int TOOL = 28;
+    int TOOL = 30;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -2938,7 +3036,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDeleteTool()
      * @generated
      */
-    int DELETE_TOOL = 29;
+    int DELETE_TOOL = 31;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -2999,7 +3097,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDropTool()
      * @generated
      */
-    int DROP_TOOL = 30;
+    int DROP_TOOL = 32;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3060,7 +3158,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getEdgeTool()
      * @generated
      */
-    int EDGE_TOOL = 31;
+    int EDGE_TOOL = 33;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3157,7 +3255,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getEdgeReconnectionTool()
      * @generated
      */
-    int EDGE_RECONNECTION_TOOL = 32;
+    int EDGE_RECONNECTION_TOOL = 34;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3219,7 +3317,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getLabelEditTool()
      * @generated
      */
-    int LABEL_EDIT_TOOL = 33;
+    int LABEL_EDIT_TOOL = 35;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3289,7 +3387,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getNodeTool()
      * @generated
      */
-    int NODE_TOOL = 34;
+    int NODE_TOOL = 36;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3493,7 +3591,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getSourceEdgeEndReconnectionTool()
      * @generated
      */
-    int SOURCE_EDGE_END_RECONNECTION_TOOL = 35;
+    int SOURCE_EDGE_END_RECONNECTION_TOOL = 37;
 
     /**
      * The meta object id for the
@@ -3504,7 +3602,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getTargetEdgeEndReconnectionTool()
      * @generated
      */
-    int TARGET_EDGE_END_RECONNECTION_TOOL = 36;
+    int TARGET_EDGE_END_RECONNECTION_TOOL = 38;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.impl.CreateViewImpl <em>Create
@@ -3514,7 +3612,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getCreateView()
      * @generated
      */
-    int CREATE_VIEW = 37;
+    int CREATE_VIEW = 39;
 
     /**
      * The feature id for the '<em><b>Children</b></em>' containment reference list. <!-- begin-user-doc --> <!--
@@ -3594,7 +3692,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDeleteView()
      * @generated
      */
-    int DELETE_VIEW = 38;
+    int DELETE_VIEW = 40;
 
     /**
      * The feature id for the '<em><b>Children</b></em>' containment reference list. <!-- begin-user-doc --> <!--
@@ -3638,7 +3736,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDialogDescription()
      * @generated
      */
-    int DIALOG_DESCRIPTION = 45;
+    int DIALOG_DESCRIPTION = 47;
 
     /**
      * The number of structural features of the '<em>Dialog Description</em>' class. <!-- begin-user-doc --> <!--
@@ -3666,7 +3764,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getSelectionDialogDescription()
      * @generated
      */
-    int SELECTION_DIALOG_DESCRIPTION = 39;
+    int SELECTION_DIALOG_DESCRIPTION = 41;
 
     /**
      * The feature id for the '<em><b>Selection Message</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc
@@ -3737,7 +3835,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getToolSection()
      * @generated
      */
-    int TOOL_SECTION = 40;
+    int TOOL_SECTION = 42;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3772,7 +3870,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDiagramToolSection()
      * @generated
      */
-    int DIAGRAM_TOOL_SECTION = 41;
+    int DIAGRAM_TOOL_SECTION = 43;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3816,7 +3914,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getNodeToolSection()
      * @generated
      */
-    int NODE_TOOL_SECTION = 42;
+    int NODE_TOOL_SECTION = 44;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3869,7 +3967,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getEdgeToolSection()
      * @generated
      */
-    int EDGE_TOOL_SECTION = 43;
+    int EDGE_TOOL_SECTION = 45;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3913,7 +4011,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDropNodeTool()
      * @generated
      */
-    int DROP_NODE_TOOL = 44;
+    int DROP_NODE_TOOL = 46;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -3991,7 +4089,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getSelectionDialogTreeDescription()
      * @generated
      */
-    int SELECTION_DIALOG_TREE_DESCRIPTION = 46;
+    int SELECTION_DIALOG_TREE_DESCRIPTION = 48;
 
     /**
      * The feature id for the '<em><b>Elements Expression</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc
@@ -4046,7 +4144,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getAction()
      * @generated
      */
-    int ACTION = 47;
+    int ACTION = 49;
 
     /**
      * The feature id for the '<em><b>Name</b></em>' attribute. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -4116,7 +4214,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDiagramToolbar()
      * @generated
      */
-    int DIAGRAM_TOOLBAR = 48;
+    int DIAGRAM_TOOLBAR = 50;
 
     /**
      * The feature id for the '<em><b>Precondition Expression</b></em>' attribute. <!-- begin-user-doc --> <!--
@@ -4160,7 +4258,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getArrowStyle()
      * @generated
      */
-    int ARROW_STYLE = 49;
+    int ARROW_STYLE = 51;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.LayoutDirection <em>Layout
@@ -4170,7 +4268,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getLayoutDirection()
      * @generated
      */
-    int LAYOUT_DIRECTION = 50;
+    int LAYOUT_DIRECTION = 52;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.LineStyle <em>Line Style</em>}'
@@ -4180,7 +4278,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getLineStyle()
      * @generated
      */
-    int LINE_STYLE = 51;
+    int LINE_STYLE = 53;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.NodeContainmentKind <em>Node
@@ -4190,7 +4288,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getNodeContainmentKind()
      * @generated
      */
-    int NODE_CONTAINMENT_KIND = 52;
+    int NODE_CONTAINMENT_KIND = 54;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.SynchronizationPolicy
@@ -4200,7 +4298,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getSynchronizationPolicy()
      * @generated
      */
-    int SYNCHRONIZATION_POLICY = 53;
+    int SYNCHRONIZATION_POLICY = 55;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.InsideLabelPosition <em>Inside
@@ -4210,7 +4308,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getInsideLabelPosition()
      * @generated
      */
-    int INSIDE_LABEL_POSITION = 54;
+    int INSIDE_LABEL_POSITION = 56;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.OutsideLabelPosition <em>Outside
@@ -4220,7 +4318,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getOutsideLabelPosition()
      * @generated
      */
-    int OUTSIDE_LABEL_POSITION = 55;
+    int OUTSIDE_LABEL_POSITION = 57;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.LabelOverflowStrategy <em>Label
@@ -4230,7 +4328,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getLabelOverflowStrategy()
      * @generated
      */
-    int LABEL_OVERFLOW_STRATEGY = 56;
+    int LABEL_OVERFLOW_STRATEGY = 58;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.ArrangeLayoutDirection <em>Arrange
@@ -4240,7 +4338,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getArrangeLayoutDirection()
      * @generated
      */
-    int ARRANGE_LAYOUT_DIRECTION = 57;
+    int ARRANGE_LAYOUT_DIRECTION = 59;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.LabelTextAlign <em>Label Text
@@ -4250,7 +4348,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getLabelTextAlign()
      * @generated
      */
-    int LABEL_TEXT_ALIGN = 58;
+    int LABEL_TEXT_ALIGN = 60;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.UserResizableDirection <em>User
@@ -4260,7 +4358,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getUserResizableDirection()
      * @generated
      */
-    int USER_RESIZABLE_DIRECTION = 59;
+    int USER_RESIZABLE_DIRECTION = 61;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.HeaderSeparatorDisplayMode
@@ -4270,7 +4368,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getHeaderSeparatorDisplayMode()
      * @generated
      */
-    int HEADER_SEPARATOR_DISPLAY_MODE = 60;
+    int HEADER_SEPARATOR_DISPLAY_MODE = 62;
 
     /**
      * The meta object id for the '{@link org.eclipse.sirius.components.view.diagram.EdgeType <em>Edge Type</em>}' enum.
@@ -4280,7 +4378,7 @@ public interface DiagramPackage extends EPackage {
      * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getEdgeType()
      * @generated
      */
-    int EDGE_TYPE = 61;
+    int EDGE_TYPE = 63;
 
     /**
      * Returns the meta object for class '{@link org.eclipse.sirius.components.view.diagram.DiagramDescription
@@ -4366,6 +4464,30 @@ public interface DiagramPackage extends EPackage {
      */
     EAttribute getDiagramDescription_ArrangeLayoutDirection();
 
+    /**
+     * Returns the meta object for the containment reference
+     * '{@link org.eclipse.sirius.components.view.diagram.DiagramDescription#getStyle <em>Style</em>}'. <!--
+     * begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return the meta object for the containment reference '<em>Style</em>'.
+     * @see org.eclipse.sirius.components.view.diagram.DiagramDescription#getStyle()
+     * @see #getDiagramDescription()
+     * @generated
+     */
+    EReference getDiagramDescription_Style();
+
+    /**
+     * Returns the meta object for the containment reference list
+     * '{@link org.eclipse.sirius.components.view.diagram.DiagramDescription#getConditionalStyles <em>Conditional
+     * Styles</em>}'. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return the meta object for the containment reference list '<em>Conditional Styles</em>'.
+     * @see org.eclipse.sirius.components.view.diagram.DiagramDescription#getConditionalStyles()
+     * @see #getDiagramDescription()
+     * @generated
+     */
+    EReference getDiagramDescription_ConditionalStyles();
+
     /**
      * Returns the meta object for the containment reference
      * '{@link org.eclipse.sirius.components.view.diagram.DiagramDescription#getGroupPalette <em>Group Palette</em>}'.
@@ -5339,6 +5461,28 @@ public interface DiagramPackage extends EPackage {
      */
     EAttribute getNodeStyleDescription_Description();
 
+    /**
+     * Returns the meta object for class '{@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription
+     * <em>Style Description</em>}'. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return the meta object for class '<em>Style Description</em>'.
+     * @see org.eclipse.sirius.components.view.diagram.DiagramStyleDescription
+     * @generated
+     */
+    EClass getDiagramStyleDescription();
+
+    /**
+     * Returns the meta object for the reference
+     * '{@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription#getBackground <em>Background</em>}'.
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return the meta object for the reference '<em>Background</em>'.
+     * @see org.eclipse.sirius.components.view.diagram.DiagramStyleDescription#getBackground()
+     * @see #getDiagramStyleDescription()
+     * @generated
+     */
+    EReference getDiagramStyleDescription_Background();
+
     /**
      * Returns the meta object for class '{@link org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle
      * <em>Conditional Node Style</em>}'. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -5362,6 +5506,28 @@ public interface DiagramPackage extends EPackage {
      */
     EReference getConditionalNodeStyle_Style();
 
+    /**
+     * Returns the meta object for class '{@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle
+     * <em>Conditional Diagram Style</em>}'. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return the meta object for class '<em>Conditional Diagram Style</em>'.
+     * @see org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle
+     * @generated
+     */
+    EClass getConditionalDiagramStyle();
+
+    /**
+     * Returns the meta object for the containment reference
+     * '{@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle#getStyle <em>Style</em>}'. <!--
+     * begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return the meta object for the containment reference '<em>Style</em>'.
+     * @see org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle#getStyle()
+     * @see #getConditionalDiagramStyle()
+     * @generated
+     */
+    EReference getConditionalDiagramStyle_Style();
+
     /**
      * Returns the meta object for class '{@link org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle
      * <em>Conditional Inside Label Style</em>}'. <!-- begin-user-doc --> <!-- end-user-doc -->
@@ -6894,6 +7060,22 @@ interface Literals {
          */
         EAttribute DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION = eINSTANCE.getDiagramDescription_ArrangeLayoutDirection();
 
+        /**
+         * The meta object literal for the '<em><b>Style</b></em>' containment reference feature. <!-- begin-user-doc
+         * --> <!-- end-user-doc -->
+         *
+         * @generated
+         */
+        EReference DIAGRAM_DESCRIPTION__STYLE = eINSTANCE.getDiagramDescription_Style();
+
+        /**
+         * The meta object literal for the '<em><b>Conditional Styles</b></em>' containment reference list feature. <!--
+         * begin-user-doc --> <!-- end-user-doc -->
+         *
+         * @generated
+         */
+        EReference DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES = eINSTANCE.getDiagramDescription_ConditionalStyles();
+
         /**
          * The meta object literal for the '<em><b>Group Palette</b></em>' containment reference feature. <!--
          * begin-user-doc --> <!-- end-user-doc -->
@@ -7585,6 +7767,25 @@ interface Literals {
          */
         EAttribute NODE_STYLE_DESCRIPTION__DESCRIPTION = eINSTANCE.getNodeStyleDescription_Description();
 
+        /**
+         * The meta object literal for the
+         * '{@link org.eclipse.sirius.components.view.diagram.impl.DiagramStyleDescriptionImpl <em>Style
+         * Description</em>}' class. <!-- begin-user-doc --> <!-- end-user-doc -->
+         *
+         * @see org.eclipse.sirius.components.view.diagram.impl.DiagramStyleDescriptionImpl
+         * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getDiagramStyleDescription()
+         * @generated
+         */
+        EClass DIAGRAM_STYLE_DESCRIPTION = eINSTANCE.getDiagramStyleDescription();
+
+        /**
+         * The meta object literal for the '<em><b>Background</b></em>' reference feature. <!-- begin-user-doc --> <!--
+         * end-user-doc -->
+         *
+         * @generated
+         */
+        EReference DIAGRAM_STYLE_DESCRIPTION__BACKGROUND = eINSTANCE.getDiagramStyleDescription_Background();
+
         /**
          * The meta object literal for the
          * '{@link org.eclipse.sirius.components.view.diagram.impl.ConditionalNodeStyleImpl <em>Conditional Node
@@ -7604,6 +7805,25 @@ interface Literals {
          */
         EReference CONDITIONAL_NODE_STYLE__STYLE = eINSTANCE.getConditionalNodeStyle_Style();
 
+        /**
+         * The meta object literal for the
+         * '{@link org.eclipse.sirius.components.view.diagram.impl.ConditionalDiagramStyleImpl <em>Conditional Diagram
+         * Style</em>}' class. <!-- begin-user-doc --> <!-- end-user-doc -->
+         *
+         * @see org.eclipse.sirius.components.view.diagram.impl.ConditionalDiagramStyleImpl
+         * @see org.eclipse.sirius.components.view.diagram.impl.DiagramPackageImpl#getConditionalDiagramStyle()
+         * @generated
+         */
+        EClass CONDITIONAL_DIAGRAM_STYLE = eINSTANCE.getConditionalDiagramStyle();
+
+        /**
+         * The meta object literal for the '<em><b>Style</b></em>' containment reference feature. <!-- begin-user-doc
+         * --> <!-- end-user-doc -->
+         *
+         * @generated
+         */
+        EReference CONDITIONAL_DIAGRAM_STYLE__STYLE = eINSTANCE.getConditionalDiagramStyle_Style();
+
         /**
          * The meta object literal for the
          * '{@link org.eclipse.sirius.components.view.diagram.impl.ConditionalInsideLabelStyleImpl <em>Conditional
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramStyleDescription.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramStyleDescription.java
new file mode 100644
index 00000000000..7b8edf0a9de
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/DiagramStyleDescription.java
@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.diagram;
+
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.sirius.components.view.UserColor;
+
+/**
+ * <!-- begin-user-doc --> A representation of the model object '<em><b>Style Description</b></em>'. <!-- end-user-doc
+ * -->
+ *
+ * <p>
+ * The following features are supported:
+ * </p>
+ * <ul>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription#getBackground <em>Background</em>}</li>
+ * </ul>
+ *
+ * @model
+ * @generated
+ * @see org.eclipse.sirius.components.view.diagram.DiagramPackage#getDiagramStyleDescription()
+ */
+public interface DiagramStyleDescription extends EObject {
+
+    /**
+     * Returns the value of the '<em><b>Background</b></em>' reference. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @return the value of the '<em>Background</em>' reference.
+     * @model
+     * @generated
+     * @see #setBackground(UserColor)
+     * @see org.eclipse.sirius.components.view.diagram.DiagramPackage#getDiagramStyleDescription_Background()
+     */
+    UserColor getBackground();
+
+    /**
+     * Sets the value of the '{@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription#getBackground
+     * <em>Background</em>}' reference. <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @param value
+     *         the new value of the '<em>Background</em>' reference.
+     * @generated
+     * @see #getBackground()
+     */
+    void setBackground(UserColor value);
+
+} // DiagramStyleDescription
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/ConditionalDiagramStyleImpl.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/ConditionalDiagramStyleImpl.java
new file mode 100644
index 00000000000..6b3fa22bc2e
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/ConditionalDiagramStyleImpl.java
@@ -0,0 +1,188 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.diagram.impl;
+
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.common.notify.NotificationChain;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.InternalEObject;
+import org.eclipse.emf.ecore.impl.ENotificationImpl;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
+import org.eclipse.sirius.components.view.diagram.DiagramPackage;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
+import org.eclipse.sirius.components.view.impl.ConditionalImpl;
+
+/**
+ * <!-- begin-user-doc --> An implementation of the model object '<em><b>Conditional Diagram Style</b></em>'. <!--
+ * end-user-doc -->
+ * <p>
+ * The following features are implemented:
+ * </p>
+ * <ul>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.impl.ConditionalDiagramStyleImpl#getStyle <em>Style</em>}</li>
+ * </ul>
+ *
+ * @generated
+ */
+public class ConditionalDiagramStyleImpl extends ConditionalImpl implements ConditionalDiagramStyle {
+
+    /**
+     * The cached value of the '{@link #getStyle() <em>Style</em>}' containment reference. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     * @see #getStyle()
+     */
+    protected DiagramStyleDescription style;
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    protected ConditionalDiagramStyleImpl() {
+        super();
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    protected EClass eStaticClass() {
+        return DiagramPackage.Literals.CONDITIONAL_DIAGRAM_STYLE;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public DiagramStyleDescription getStyle() {
+        return this.style;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public void setStyle(DiagramStyleDescription newStyle) {
+        if (newStyle != this.style) {
+            NotificationChain msgs = null;
+            if (this.style != null)
+                msgs = ((InternalEObject) this.style).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE, null, msgs);
+            if (newStyle != null)
+                msgs = ((InternalEObject) newStyle).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE, null, msgs);
+            msgs = this.basicSetStyle(newStyle, msgs);
+            if (msgs != null)
+                msgs.dispatch();
+        } else if (this.eNotificationRequired())
+            this.eNotify(new ENotificationImpl(this, Notification.SET, DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE, newStyle, newStyle));
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    public NotificationChain basicSetStyle(DiagramStyleDescription newStyle, NotificationChain msgs) {
+        DiagramStyleDescription oldStyle = this.style;
+        this.style = newStyle;
+        if (this.eNotificationRequired()) {
+            ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE, oldStyle, newStyle);
+            if (msgs == null)
+                msgs = notification;
+            else
+                msgs.add(notification);
+        }
+        return msgs;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
+        switch (featureID) {
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE:
+                return this.basicSetStyle(null, msgs);
+        }
+        return super.eInverseRemove(otherEnd, featureID, msgs);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public Object eGet(int featureID, boolean resolve, boolean coreType) {
+        switch (featureID) {
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE:
+                return this.getStyle();
+        }
+        return super.eGet(featureID, resolve, coreType);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public void eSet(int featureID, Object newValue) {
+        switch (featureID) {
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE:
+                this.setStyle((DiagramStyleDescription) newValue);
+                return;
+        }
+        super.eSet(featureID, newValue);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public void eUnset(int featureID) {
+        switch (featureID) {
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE:
+                this.setStyle(null);
+                return;
+        }
+        super.eUnset(featureID);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public boolean eIsSet(int featureID) {
+        switch (featureID) {
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE__STYLE:
+                return this.style != null;
+        }
+        return super.eIsSet(featureID);
+    }
+
+} // ConditionalDiagramStyleImpl
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramDescriptionImpl.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramDescriptionImpl.java
index bb89682b972..476cf8ac150 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramDescriptionImpl.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramDescriptionImpl.java
@@ -23,9 +23,11 @@
 import org.eclipse.emf.ecore.util.EObjectContainmentEList;
 import org.eclipse.emf.ecore.util.InternalEList;
 import org.eclipse.sirius.components.view.diagram.ArrangeLayoutDirection;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
 import org.eclipse.sirius.components.view.diagram.DiagramDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramPackage;
 import org.eclipse.sirius.components.view.diagram.DiagramPalette;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramToolbar;
 import org.eclipse.sirius.components.view.diagram.EdgeDescription;
 import org.eclipse.sirius.components.view.diagram.GroupPalette;
@@ -50,6 +52,9 @@
  * Descriptions</em>}</li>
  * <li>{@link org.eclipse.sirius.components.view.diagram.impl.DiagramDescriptionImpl#getArrangeLayoutDirection
  * <em>Arrange Layout Direction</em>}</li>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.impl.DiagramDescriptionImpl#getStyle <em>Style</em>}</li>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.impl.DiagramDescriptionImpl#getConditionalStyles
+ * <em>Conditional Styles</em>}</li>
  * </ul>
  *
  * @generated
@@ -146,6 +151,26 @@ public class DiagramDescriptionImpl extends RepresentationDescriptionImpl implem
      */
     protected ArrangeLayoutDirection arrangeLayoutDirection = ARRANGE_LAYOUT_DIRECTION_EDEFAULT;
 
+    /**
+     * The cached value of the '{@link #getStyle() <em>Style</em>}' containment reference. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @see #getStyle()
+     * @generated
+     * @ordered
+     */
+    protected DiagramStyleDescription style;
+
+    /**
+     * The cached value of the '{@link #getConditionalStyles() <em>Conditional Styles</em>}' containment reference list.
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @see #getConditionalStyles()
+     * @generated
+     * @ordered
+     */
+    protected EList<ConditionalDiagramStyle> conditionalStyles;
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -333,6 +358,67 @@ public void setArrangeLayoutDirection(ArrangeLayoutDirection newArrangeLayoutDir
             this.eNotify(new ENotificationImpl(this, Notification.SET, DiagramPackage.DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION, oldArrangeLayoutDirection, this.arrangeLayoutDirection));
     }
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public DiagramStyleDescription getStyle() {
+        return this.style;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    public NotificationChain basicSetStyle(DiagramStyleDescription newStyle, NotificationChain msgs) {
+        DiagramStyleDescription oldStyle = this.style;
+        this.style = newStyle;
+        if (this.eNotificationRequired()) {
+            ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, DiagramPackage.DIAGRAM_DESCRIPTION__STYLE, oldStyle, newStyle);
+            if (msgs == null)
+                msgs = notification;
+            else
+                msgs.add(notification);
+        }
+        return msgs;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public void setStyle(DiagramStyleDescription newStyle) {
+        if (newStyle != this.style) {
+            NotificationChain msgs = null;
+            if (this.style != null)
+                msgs = ((InternalEObject) this.style).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - DiagramPackage.DIAGRAM_DESCRIPTION__STYLE, null, msgs);
+            if (newStyle != null)
+                msgs = ((InternalEObject) newStyle).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - DiagramPackage.DIAGRAM_DESCRIPTION__STYLE, null, msgs);
+            msgs = this.basicSetStyle(newStyle, msgs);
+            if (msgs != null)
+                msgs.dispatch();
+        } else if (this.eNotificationRequired())
+            this.eNotify(new ENotificationImpl(this, Notification.SET, DiagramPackage.DIAGRAM_DESCRIPTION__STYLE, newStyle, newStyle));
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public EList<ConditionalDiagramStyle> getConditionalStyles() {
+        if (this.conditionalStyles == null) {
+            this.conditionalStyles = new EObjectContainmentEList<>(ConditionalDiagramStyle.class, this, DiagramPackage.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES);
+        }
+        return this.conditionalStyles;
+    }
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -399,6 +485,10 @@ public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID,
                 return ((InternalEList<?>) this.getNodeDescriptions()).basicRemove(otherEnd, msgs);
             case DiagramPackage.DIAGRAM_DESCRIPTION__EDGE_DESCRIPTIONS:
                 return ((InternalEList<?>) this.getEdgeDescriptions()).basicRemove(otherEnd, msgs);
+            case DiagramPackage.DIAGRAM_DESCRIPTION__STYLE:
+                return this.basicSetStyle(null, msgs);
+            case DiagramPackage.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES:
+                return ((InternalEList<?>) this.getConditionalStyles()).basicRemove(otherEnd, msgs);
         }
         return super.eInverseRemove(otherEnd, featureID, msgs);
     }
@@ -425,6 +515,10 @@ public Object eGet(int featureID, boolean resolve, boolean coreType) {
                 return this.getEdgeDescriptions();
             case DiagramPackage.DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION:
                 return this.getArrangeLayoutDirection();
+            case DiagramPackage.DIAGRAM_DESCRIPTION__STYLE:
+                return this.getStyle();
+            case DiagramPackage.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES:
+                return this.getConditionalStyles();
         }
         return super.eGet(featureID, resolve, coreType);
     }
@@ -461,6 +555,13 @@ public void eSet(int featureID, Object newValue) {
             case DiagramPackage.DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION:
                 this.setArrangeLayoutDirection((ArrangeLayoutDirection) newValue);
                 return;
+            case DiagramPackage.DIAGRAM_DESCRIPTION__STYLE:
+                this.setStyle((DiagramStyleDescription) newValue);
+                return;
+            case DiagramPackage.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES:
+                this.getConditionalStyles().clear();
+                this.getConditionalStyles().addAll((Collection<? extends ConditionalDiagramStyle>) newValue);
+                return;
         }
         super.eSet(featureID, newValue);
     }
@@ -494,6 +595,12 @@ public void eUnset(int featureID) {
             case DiagramPackage.DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION:
                 this.setArrangeLayoutDirection(ARRANGE_LAYOUT_DIRECTION_EDEFAULT);
                 return;
+            case DiagramPackage.DIAGRAM_DESCRIPTION__STYLE:
+                this.setStyle((DiagramStyleDescription) null);
+                return;
+            case DiagramPackage.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES:
+                this.getConditionalStyles().clear();
+                return;
         }
         super.eUnset(featureID);
     }
@@ -520,6 +627,10 @@ public boolean eIsSet(int featureID) {
                 return this.edgeDescriptions != null && !this.edgeDescriptions.isEmpty();
             case DiagramPackage.DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION:
                 return this.arrangeLayoutDirection != ARRANGE_LAYOUT_DIRECTION_EDEFAULT;
+            case DiagramPackage.DIAGRAM_DESCRIPTION__STYLE:
+                return this.style != null;
+            case DiagramPackage.DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES:
+                return this.conditionalStyles != null && !this.conditionalStyles.isEmpty();
         }
         return super.eIsSet(featureID);
     }
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramFactoryImpl.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramFactoryImpl.java
index 1f831344683..35e7c850c8a 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramFactoryImpl.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramFactoryImpl.java
@@ -21,6 +21,7 @@
 import org.eclipse.sirius.components.view.diagram.Action;
 import org.eclipse.sirius.components.view.diagram.ArrangeLayoutDirection;
 import org.eclipse.sirius.components.view.diagram.ArrowStyle;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalEdgeStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle;
@@ -32,6 +33,7 @@
 import org.eclipse.sirius.components.view.diagram.DiagramFactory;
 import org.eclipse.sirius.components.view.diagram.DiagramPackage;
 import org.eclipse.sirius.components.view.diagram.DiagramPalette;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramToolSection;
 import org.eclipse.sirius.components.view.diagram.DiagramToolbar;
 import org.eclipse.sirius.components.view.diagram.DropNodeTool;
@@ -142,8 +144,12 @@ public EObject create(EClass eClass) {
                 return this.createInsideLabelStyle();
             case DiagramPackage.OUTSIDE_LABEL_STYLE:
                 return this.createOutsideLabelStyle();
+            case DiagramPackage.DIAGRAM_STYLE_DESCRIPTION:
+                return this.createDiagramStyleDescription();
             case DiagramPackage.CONDITIONAL_NODE_STYLE:
                 return this.createConditionalNodeStyle();
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE:
+                return this.createConditionalDiagramStyle();
             case DiagramPackage.CONDITIONAL_INSIDE_LABEL_STYLE:
                 return this.createConditionalInsideLabelStyle();
             case DiagramPackage.CONDITIONAL_OUTSIDE_LABEL_STYLE:
@@ -382,6 +388,17 @@ public OutsideLabelStyle createOutsideLabelStyle() {
         return outsideLabelStyle;
     }
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public DiagramStyleDescription createDiagramStyleDescription() {
+        DiagramStyleDescriptionImpl diagramStyleDescription = new DiagramStyleDescriptionImpl();
+        return diagramStyleDescription;
+    }
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -393,6 +410,17 @@ public ConditionalNodeStyle createConditionalNodeStyle() {
         return conditionalNodeStyle;
     }
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public ConditionalDiagramStyle createConditionalDiagramStyle() {
+        ConditionalDiagramStyleImpl conditionalDiagramStyle = new ConditionalDiagramStyleImpl();
+        return conditionalDiagramStyle;
+    }
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramPackageImpl.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramPackageImpl.java
index b5543309d9d..140b15fabcf 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramPackageImpl.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramPackageImpl.java
@@ -23,6 +23,7 @@
 import org.eclipse.sirius.components.view.diagram.ArrangeLayoutDirection;
 import org.eclipse.sirius.components.view.diagram.ArrowStyle;
 import org.eclipse.sirius.components.view.diagram.BorderStyle;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalEdgeStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle;
@@ -35,6 +36,7 @@
 import org.eclipse.sirius.components.view.diagram.DiagramFactory;
 import org.eclipse.sirius.components.view.diagram.DiagramPackage;
 import org.eclipse.sirius.components.view.diagram.DiagramPalette;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramToolSection;
 import org.eclipse.sirius.components.view.diagram.DiagramToolbar;
 import org.eclipse.sirius.components.view.diagram.DialogDescription;
@@ -210,6 +212,13 @@ public class DiagramPackageImpl extends EPackageImpl implements DiagramPackage {
      */
     private EClass nodeStyleDescriptionEClass = null;
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    private EClass diagramStyleDescriptionEClass = null;
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -217,6 +226,13 @@ public class DiagramPackageImpl extends EPackageImpl implements DiagramPackage {
      */
     private EClass conditionalNodeStyleEClass = null;
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    private EClass conditionalDiagramStyleEClass = null;
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -673,6 +689,26 @@ public EAttribute getDiagramDescription_ArrangeLayoutDirection() {
         return (EAttribute) this.diagramDescriptionEClass.getEStructuralFeatures().get(6);
     }
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public EReference getDiagramDescription_Style() {
+        return (EReference) this.diagramDescriptionEClass.getEStructuralFeatures().get(7);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public EReference getDiagramDescription_ConditionalStyles() {
+        return (EReference) this.diagramDescriptionEClass.getEStructuralFeatures().get(8);
+    }
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -1493,6 +1529,26 @@ public EAttribute getNodeStyleDescription_Description() {
         return (EAttribute) this.nodeStyleDescriptionEClass.getEStructuralFeatures().get(1);
     }
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public EClass getDiagramStyleDescription() {
+        return this.diagramStyleDescriptionEClass;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public EReference getDiagramStyleDescription_Background() {
+        return (EReference) this.diagramStyleDescriptionEClass.getEStructuralFeatures().get(0);
+    }
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -1513,6 +1569,26 @@ public EReference getConditionalNodeStyle_Style() {
         return (EReference) this.conditionalNodeStyleEClass.getEStructuralFeatures().get(0);
     }
 
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public EClass getConditionalDiagramStyle() {
+        return this.conditionalDiagramStyleEClass;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public EReference getConditionalDiagramStyle_Style() {
+        return (EReference) this.conditionalDiagramStyleEClass.getEStructuralFeatures().get(0);
+    }
+
     /**
      * <!-- begin-user-doc --> <!-- end-user-doc -->
      *
@@ -2803,6 +2879,8 @@ public void createPackageContents() {
         this.createEReference(this.diagramDescriptionEClass, DIAGRAM_DESCRIPTION__NODE_DESCRIPTIONS);
         this.createEReference(this.diagramDescriptionEClass, DIAGRAM_DESCRIPTION__EDGE_DESCRIPTIONS);
         this.createEAttribute(this.diagramDescriptionEClass, DIAGRAM_DESCRIPTION__ARRANGE_LAYOUT_DIRECTION);
+        this.createEReference(this.diagramDescriptionEClass, DIAGRAM_DESCRIPTION__STYLE);
+        this.createEReference(this.diagramDescriptionEClass, DIAGRAM_DESCRIPTION__CONDITIONAL_STYLES);
 
         this.diagramElementDescriptionEClass = this.createEClass(DIAGRAM_ELEMENT_DESCRIPTION);
         this.createEAttribute(this.diagramElementDescriptionEClass, DIAGRAM_ELEMENT_DESCRIPTION__NAME);
@@ -2900,9 +2978,15 @@ public void createPackageContents() {
         this.createEReference(this.nodeStyleDescriptionEClass, NODE_STYLE_DESCRIPTION__CHILDREN_LAYOUT_STRATEGY);
         this.createEAttribute(this.nodeStyleDescriptionEClass, NODE_STYLE_DESCRIPTION__DESCRIPTION);
 
+        this.diagramStyleDescriptionEClass = this.createEClass(DIAGRAM_STYLE_DESCRIPTION);
+        this.createEReference(this.diagramStyleDescriptionEClass, DIAGRAM_STYLE_DESCRIPTION__BACKGROUND);
+
         this.conditionalNodeStyleEClass = this.createEClass(CONDITIONAL_NODE_STYLE);
         this.createEReference(this.conditionalNodeStyleEClass, CONDITIONAL_NODE_STYLE__STYLE);
 
+        this.conditionalDiagramStyleEClass = this.createEClass(CONDITIONAL_DIAGRAM_STYLE);
+        this.createEReference(this.conditionalDiagramStyleEClass, CONDITIONAL_DIAGRAM_STYLE__STYLE);
+
         this.conditionalInsideLabelStyleEClass = this.createEClass(CONDITIONAL_INSIDE_LABEL_STYLE);
         this.createEReference(this.conditionalInsideLabelStyleEClass, CONDITIONAL_INSIDE_LABEL_STYLE__STYLE);
 
@@ -3101,6 +3185,7 @@ public void initializePackageContents() {
         this.nodeLabelStyleEClass.getESuperTypes().add(this.getBorderStyle());
         this.nodeStyleDescriptionEClass.getESuperTypes().add(this.getBorderStyle());
         this.conditionalNodeStyleEClass.getESuperTypes().add(theViewPackage.getConditional());
+        this.conditionalDiagramStyleEClass.getESuperTypes().add(theViewPackage.getConditional());
         this.conditionalInsideLabelStyleEClass.getESuperTypes().add(theViewPackage.getConditional());
         this.conditionalOutsideLabelStyleEClass.getESuperTypes().add(theViewPackage.getConditional());
         this.rectangularNodeStyleDescriptionEClass.getESuperTypes().add(this.getNodeStyleDescription());
@@ -3145,6 +3230,10 @@ public void initializePackageContents() {
         this.getDiagramDescription_EdgeDescriptions().getEKeys().add(this.getDiagramElementDescription_Name());
         this.initEAttribute(this.getDiagramDescription_ArrangeLayoutDirection(), this.getArrangeLayoutDirection(), "arrangeLayoutDirection", "UNDEFINED", 1, 1, DiagramDescription.class, !IS_TRANSIENT,
                 !IS_VOLATILE, IS_CHANGEABLE, !IS_UNSETTABLE, !IS_ID, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
+        this.initEReference(this.getDiagramDescription_Style(), this.getDiagramStyleDescription(), null, "style", null, 0, 1, DiagramDescription.class, !IS_TRANSIENT, !IS_VOLATILE, IS_CHANGEABLE,
+                IS_COMPOSITE, !IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
+        this.initEReference(this.getDiagramDescription_ConditionalStyles(), this.getConditionalDiagramStyle(), null, "conditionalStyles", null, 0, -1, DiagramDescription.class, !IS_TRANSIENT,
+                !IS_VOLATILE, IS_CHANGEABLE, IS_COMPOSITE, !IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
 
         this.initEClass(this.diagramElementDescriptionEClass, DiagramElementDescription.class, "DiagramElementDescription", IS_ABSTRACT, !IS_INTERFACE, IS_GENERATED_INSTANCE_CLASS);
         this.initEAttribute(this.getDiagramElementDescription_Name(), theViewPackage.getIdentifier(), "name", "NewRepresentationDescription", 0, 1, DiagramElementDescription.class, !IS_TRANSIENT,
@@ -3311,10 +3400,18 @@ public void initializePackageContents() {
         this.initEAttribute(this.getNodeStyleDescription_Description(), this.ecorePackage.getEString(), "description", null, 0, 1, NodeStyleDescription.class, !IS_TRANSIENT, !IS_VOLATILE,
                 IS_CHANGEABLE, !IS_UNSETTABLE, !IS_ID, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
 
+        this.initEClass(this.diagramStyleDescriptionEClass, DiagramStyleDescription.class, "DiagramStyleDescription", !IS_ABSTRACT, !IS_INTERFACE, IS_GENERATED_INSTANCE_CLASS);
+        this.initEReference(this.getDiagramStyleDescription_Background(), theViewPackage.getUserColor(), null, "background", null, 0, 1, DiagramStyleDescription.class, !IS_TRANSIENT, !IS_VOLATILE,
+                IS_CHANGEABLE, !IS_COMPOSITE, IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
+
         this.initEClass(this.conditionalNodeStyleEClass, ConditionalNodeStyle.class, "ConditionalNodeStyle", !IS_ABSTRACT, !IS_INTERFACE, IS_GENERATED_INSTANCE_CLASS);
         this.initEReference(this.getConditionalNodeStyle_Style(), this.getNodeStyleDescription(), null, "style", null, 0, 1, ConditionalNodeStyle.class, !IS_TRANSIENT, !IS_VOLATILE, IS_CHANGEABLE,
                 IS_COMPOSITE, !IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
 
+        this.initEClass(this.conditionalDiagramStyleEClass, ConditionalDiagramStyle.class, "ConditionalDiagramStyle", !IS_ABSTRACT, !IS_INTERFACE, IS_GENERATED_INSTANCE_CLASS);
+        this.initEReference(this.getConditionalDiagramStyle_Style(), this.getDiagramStyleDescription(), null, "style", null, 0, 1, ConditionalDiagramStyle.class, !IS_TRANSIENT, !IS_VOLATILE,
+                IS_CHANGEABLE, IS_COMPOSITE, !IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
+
         this.initEClass(this.conditionalInsideLabelStyleEClass, ConditionalInsideLabelStyle.class, "ConditionalInsideLabelStyle", !IS_ABSTRACT, !IS_INTERFACE, IS_GENERATED_INSTANCE_CLASS);
         this.initEReference(this.getConditionalInsideLabelStyle_Style(), this.getInsideLabelStyle(), null, "style", null, 0, 1, ConditionalInsideLabelStyle.class, !IS_TRANSIENT, !IS_VOLATILE,
                 IS_CHANGEABLE, IS_COMPOSITE, !IS_RESOLVE_PROXIES, !IS_UNSETTABLE, IS_UNIQUE, !IS_DERIVED, IS_ORDERED);
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramStyleDescriptionImpl.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramStyleDescriptionImpl.java
new file mode 100644
index 00000000000..69c8a93addf
--- /dev/null
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/impl/DiagramStyleDescriptionImpl.java
@@ -0,0 +1,168 @@
+/*******************************************************************************
+ * Copyright (c) 2026 Obeo.
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *     Obeo - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.sirius.components.view.diagram.impl;
+
+import org.eclipse.emf.common.notify.Notification;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.InternalEObject;
+import org.eclipse.emf.ecore.impl.ENotificationImpl;
+import org.eclipse.emf.ecore.impl.MinimalEObjectImpl;
+import org.eclipse.sirius.components.view.UserColor;
+import org.eclipse.sirius.components.view.diagram.DiagramPackage;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
+
+/**
+ * <!-- begin-user-doc --> An implementation of the model object '<em><b>Style Description</b></em>'. <!-- end-user-doc
+ * -->
+ * <p>
+ * The following features are implemented:
+ * </p>
+ * <ul>
+ * <li>{@link org.eclipse.sirius.components.view.diagram.impl.DiagramStyleDescriptionImpl#getBackground
+ * <em>Background</em>}</li>
+ * </ul>
+ *
+ * @generated
+ */
+public class DiagramStyleDescriptionImpl extends MinimalEObjectImpl.Container implements DiagramStyleDescription {
+
+    /**
+     * The cached value of the '{@link #getBackground() <em>Background</em>}' reference. <!-- begin-user-doc --> <!--
+     * end-user-doc -->
+     *
+     * @generated
+     * @ordered
+     * @see #getBackground()
+     */
+    protected UserColor background;
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    protected DiagramStyleDescriptionImpl() {
+        super();
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    protected EClass eStaticClass() {
+        return DiagramPackage.Literals.DIAGRAM_STYLE_DESCRIPTION;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public UserColor getBackground() {
+        if (this.background != null && this.background.eIsProxy()) {
+            InternalEObject oldBackground = (InternalEObject) this.background;
+            this.background = (UserColor) this.eResolveProxy(oldBackground);
+            if (this.background != oldBackground) {
+                if (this.eNotificationRequired())
+                    this.eNotify(new ENotificationImpl(this, Notification.RESOLVE, DiagramPackage.DIAGRAM_STYLE_DESCRIPTION__BACKGROUND, oldBackground, this.background));
+            }
+        }
+        return this.background;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public void setBackground(UserColor newBackground) {
+        UserColor oldBackground = this.background;
+        this.background = newBackground;
+        if (this.eNotificationRequired())
+            this.eNotify(new ENotificationImpl(this, Notification.SET, DiagramPackage.DIAGRAM_STYLE_DESCRIPTION__BACKGROUND, oldBackground, this.background));
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    public UserColor basicGetBackground() {
+        return this.background;
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public Object eGet(int featureID, boolean resolve, boolean coreType) {
+        switch (featureID) {
+            case DiagramPackage.DIAGRAM_STYLE_DESCRIPTION__BACKGROUND:
+                if (resolve)
+                    return this.getBackground();
+                return this.basicGetBackground();
+        }
+        return super.eGet(featureID, resolve, coreType);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public void eSet(int featureID, Object newValue) {
+        switch (featureID) {
+            case DiagramPackage.DIAGRAM_STYLE_DESCRIPTION__BACKGROUND:
+                this.setBackground((UserColor) newValue);
+                return;
+        }
+        super.eSet(featureID, newValue);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public void eUnset(int featureID) {
+        switch (featureID) {
+            case DiagramPackage.DIAGRAM_STYLE_DESCRIPTION__BACKGROUND:
+                this.setBackground(null);
+                return;
+        }
+        super.eUnset(featureID);
+    }
+
+    /**
+     * <!-- begin-user-doc --> <!-- end-user-doc -->
+     *
+     * @generated
+     */
+    @Override
+    public boolean eIsSet(int featureID) {
+        switch (featureID) {
+            case DiagramPackage.DIAGRAM_STYLE_DESCRIPTION__BACKGROUND:
+                return this.background != null;
+        }
+        return super.eIsSet(featureID);
+    }
+
+} // DiagramStyleDescriptionImpl
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramAdapterFactory.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramAdapterFactory.java
index 85ea5e72702..a941fa120d0 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramAdapterFactory.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramAdapterFactory.java
@@ -22,6 +22,7 @@
 import org.eclipse.sirius.components.view.RepresentationDescription;
 import org.eclipse.sirius.components.view.diagram.Action;
 import org.eclipse.sirius.components.view.diagram.BorderStyle;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalEdgeStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle;
@@ -33,6 +34,7 @@
 import org.eclipse.sirius.components.view.diagram.DiagramElementDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramPackage;
 import org.eclipse.sirius.components.view.diagram.DiagramPalette;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramToolSection;
 import org.eclipse.sirius.components.view.diagram.DiagramToolbar;
 import org.eclipse.sirius.components.view.diagram.DialogDescription;
@@ -173,11 +175,21 @@ public Adapter caseNodeStyleDescription(NodeStyleDescription object) {
             return DiagramAdapterFactory.this.createNodeStyleDescriptionAdapter();
         }
 
+        @Override
+        public Adapter caseDiagramStyleDescription(DiagramStyleDescription object) {
+            return DiagramAdapterFactory.this.createDiagramStyleDescriptionAdapter();
+        }
+
         @Override
         public Adapter caseConditionalNodeStyle(ConditionalNodeStyle object) {
             return DiagramAdapterFactory.this.createConditionalNodeStyleAdapter();
         }
 
+        @Override
+        public Adapter caseConditionalDiagramStyle(ConditionalDiagramStyle object) {
+            return DiagramAdapterFactory.this.createConditionalDiagramStyleAdapter();
+        }
+
         @Override
         public Adapter caseConditionalInsideLabelStyle(ConditionalInsideLabelStyle object) {
             return DiagramAdapterFactory.this.createConditionalInsideLabelStyleAdapter();
@@ -631,6 +643,20 @@ public Adapter createNodeStyleDescriptionAdapter() {
         return null;
     }
 
+    /**
+     * Creates a new adapter for an object of class
+     * '{@link org.eclipse.sirius.components.view.diagram.DiagramStyleDescription <em>Style Description</em>}'. <!--
+     * begin-user-doc --> This default implementation returns null so that we can easily ignore cases; it's useful to
+     * ignore a case when inheritance will catch all the cases anyway. <!-- end-user-doc -->
+     *
+     * @return the new adapter.
+     * @see org.eclipse.sirius.components.view.diagram.DiagramStyleDescription
+     * @generated
+     */
+    public Adapter createDiagramStyleDescriptionAdapter() {
+        return null;
+    }
+
     /**
      * Creates a new adapter for an object of class
      * '{@link org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle <em>Conditional Node Style</em>}'. <!--
@@ -645,6 +671,20 @@ public Adapter createConditionalNodeStyleAdapter() {
         return null;
     }
 
+    /**
+     * Creates a new adapter for an object of class
+     * '{@link org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle <em>Conditional Diagram Style</em>}'.
+     * <!-- begin-user-doc --> This default implementation returns null so that we can easily ignore cases; it's useful
+     * to ignore a case when inheritance will catch all the cases anyway. <!-- end-user-doc -->
+     *
+     * @return the new adapter.
+     * @see org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle
+     * @generated
+     */
+    public Adapter createConditionalDiagramStyleAdapter() {
+        return null;
+    }
+
     /**
      * Creates a new adapter for an object of class
      * '{@link org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle <em>Conditional Inside Label
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramSwitch.java b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramSwitch.java
index 4704ed7bea2..7fd447a98d9 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramSwitch.java
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/java/org/eclipse/sirius/components/view/diagram/util/DiagramSwitch.java
@@ -21,6 +21,7 @@
 import org.eclipse.sirius.components.view.RepresentationDescription;
 import org.eclipse.sirius.components.view.diagram.Action;
 import org.eclipse.sirius.components.view.diagram.BorderStyle;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalEdgeStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle;
@@ -32,6 +33,7 @@
 import org.eclipse.sirius.components.view.diagram.DiagramElementDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramPackage;
 import org.eclipse.sirius.components.view.diagram.DiagramPalette;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
 import org.eclipse.sirius.components.view.diagram.DiagramToolSection;
 import org.eclipse.sirius.components.view.diagram.DiagramToolbar;
 import org.eclipse.sirius.components.view.diagram.DialogDescription;
@@ -266,6 +268,13 @@ protected T doSwitch(int classifierID, EObject theEObject) {
                     result = this.defaultCase(theEObject);
                 return result;
             }
+            case DiagramPackage.DIAGRAM_STYLE_DESCRIPTION: {
+                DiagramStyleDescription diagramStyleDescription = (DiagramStyleDescription) theEObject;
+                T result = this.caseDiagramStyleDescription(diagramStyleDescription);
+                if (result == null)
+                    result = this.defaultCase(theEObject);
+                return result;
+            }
             case DiagramPackage.CONDITIONAL_NODE_STYLE: {
                 ConditionalNodeStyle conditionalNodeStyle = (ConditionalNodeStyle) theEObject;
                 T result = this.caseConditionalNodeStyle(conditionalNodeStyle);
@@ -275,6 +284,15 @@ protected T doSwitch(int classifierID, EObject theEObject) {
                     result = this.defaultCase(theEObject);
                 return result;
             }
+            case DiagramPackage.CONDITIONAL_DIAGRAM_STYLE: {
+                ConditionalDiagramStyle conditionalDiagramStyle = (ConditionalDiagramStyle) theEObject;
+                T result = this.caseConditionalDiagramStyle(conditionalDiagramStyle);
+                if (result == null)
+                    result = this.caseConditional(conditionalDiagramStyle);
+                if (result == null)
+                    result = this.defaultCase(theEObject);
+                return result;
+            }
             case DiagramPackage.CONDITIONAL_INSIDE_LABEL_STYLE: {
                 ConditionalInsideLabelStyle conditionalInsideLabelStyle = (ConditionalInsideLabelStyle) theEObject;
                 T result = this.caseConditionalInsideLabelStyle(conditionalInsideLabelStyle);
@@ -807,6 +825,21 @@ public T caseNodeStyleDescription(NodeStyleDescription object) {
         return null;
     }
 
+    /**
+     * Returns the result of interpreting the object as an instance of '<em>Style Description</em>'. <!-- begin-user-doc
+     * --> This implementation returns null; returning a non-null result will terminate the switch. <!-- end-user-doc
+     * -->
+     *
+     * @param object
+     *            the target of the switch.
+     * @return the result of interpreting the object as an instance of '<em>Style Description</em>'.
+     * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)
+     * @generated
+     */
+    public T caseDiagramStyleDescription(DiagramStyleDescription object) {
+        return null;
+    }
+
     /**
      * Returns the result of interpreting the object as an instance of '<em>Conditional Node Style</em>'. <!--
      * begin-user-doc --> This implementation returns null; returning a non-null result will terminate the switch. <!--
@@ -822,6 +855,21 @@ public T caseConditionalNodeStyle(ConditionalNodeStyle object) {
         return null;
     }
 
+    /**
+     * Returns the result of interpreting the object as an instance of '<em>Conditional Diagram Style</em>'. <!--
+     * begin-user-doc --> This implementation returns null; returning a non-null result will terminate the switch. <!--
+     * end-user-doc -->
+     *
+     * @param object
+     *            the target of the switch.
+     * @return the result of interpreting the object as an instance of '<em>Conditional Diagram Style</em>'.
+     * @see #doSwitch(org.eclipse.emf.ecore.EObject) doSwitch(EObject)
+     * @generated
+     */
+    public T caseConditionalDiagramStyle(ConditionalDiagramStyle object) {
+        return null;
+    }
+
     /**
      * Returns the result of interpreting the object as an instance of '<em>Conditional Inside Label Style</em>'. <!--
      * begin-user-doc --> This implementation returns null; returning a non-null result will terminate the switch. <!--
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.ecore b/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.ecore
index dd90e01323a..a3c321f22c5 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.ecore
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.ecore
@@ -100,6 +100,10 @@
         eType="#//EdgeDescription" containment="true" eKeys="#//DiagramElementDescription/name"/>
     <eStructuralFeatures xsi:type="ecore:EAttribute" name="arrangeLayoutDirection"
         lowerBound="1" eType="#//ArrangeLayoutDirection" defaultValueLiteral="UNDEFINED"/>
+    <eStructuralFeatures xsi:type="ecore:EReference" name="style" eType="#//DiagramStyleDescription"
+        containment="true"/>
+    <eStructuralFeatures xsi:type="ecore:EReference" name="conditionalStyles" upperBound="-1"
+        eType="#//ConditionalDiagramStyle" containment="true"/>
   </eClassifiers>
   <eClassifiers xsi:type="ecore:EClass" name="DiagramElementDescription" abstract="true">
     <eStructuralFeatures xsi:type="ecore:EAttribute" name="name" eType="ecore:EDataType ../../../../../sirius-components-view/src/main/resources/model/view.ecore#//Identifier"
@@ -255,10 +259,17 @@
         eType="#//LayoutStrategyDescription" containment="true"/>
     <eStructuralFeatures xsi:type="ecore:EAttribute" name="description" eType="ecore:EDataType http://www.eclipse.org/emf/2002/Ecore#//EString"/>
   </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="DiagramStyleDescription">
+    <eStructuralFeatures xsi:type="ecore:EReference" name="background" eType="ecore:EClass ../../../../../sirius-components-view/src/main/resources/model/view.ecore#//UserColor"/>
+  </eClassifiers>
   <eClassifiers xsi:type="ecore:EClass" name="ConditionalNodeStyle" eSuperTypes="../../../../../sirius-components-view/src/main/resources/model/view.ecore#//Conditional">
     <eStructuralFeatures xsi:type="ecore:EReference" name="style" eType="#//NodeStyleDescription"
         containment="true"/>
   </eClassifiers>
+  <eClassifiers xsi:type="ecore:EClass" name="ConditionalDiagramStyle" eSuperTypes="../../../../../sirius-components-view/src/main/resources/model/view.ecore#//Conditional">
+    <eStructuralFeatures xsi:type="ecore:EReference" name="style" eType="#//DiagramStyleDescription"
+        containment="true"/>
+  </eClassifiers>
   <eClassifiers xsi:type="ecore:EClass" name="ConditionalInsideLabelStyle" eSuperTypes="../../../../../sirius-components-view/src/main/resources/model/view.ecore#//Conditional">
     <eStructuralFeatures xsi:type="ecore:EReference" name="style" eType="#//InsideLabelStyle"
         containment="true"/>
diff --git a/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.genmodel b/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.genmodel
index 5a3abc44c31..a8f71ad7491 100644
--- a/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.genmodel
+++ b/packages/view/backend/sirius-components-view-diagram/src/main/resources/model/diagram.genmodel
@@ -106,6 +106,8 @@
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//DiagramDescription/nodeDescriptions"/>
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//DiagramDescription/edgeDescriptions"/>
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute diagram.ecore#//DiagramDescription/arrangeLayoutDirection"/>
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//DiagramDescription/style"/>
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//DiagramDescription/conditionalStyles"/>
     </genClasses>
     <genClasses image="false" ecoreClass="diagram.ecore#//DiagramElementDescription">
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute diagram.ecore#//DiagramElementDescription/name"/>
@@ -201,9 +203,15 @@
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//NodeStyleDescription/childrenLayoutStrategy"/>
       <genFeatures createChild="false" ecoreFeature="ecore:EAttribute diagram.ecore#//NodeStyleDescription/description"/>
     </genClasses>
+    <genClasses ecoreClass="diagram.ecore#//DiagramStyleDescription">
+      <genFeatures notify="false" createChild="false" propertySortChoices="true" ecoreFeature="ecore:EReference diagram.ecore#//DiagramStyleDescription/background"/>
+    </genClasses>
     <genClasses ecoreClass="diagram.ecore#//ConditionalNodeStyle">
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//ConditionalNodeStyle/style"/>
     </genClasses>
+    <genClasses ecoreClass="diagram.ecore#//ConditionalDiagramStyle">
+      <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//ConditionalDiagramStyle/style"/>
+    </genClasses>
     <genClasses ecoreClass="diagram.ecore#//ConditionalInsideLabelStyle">
       <genFeatures property="None" children="true" createChild="true" ecoreFeature="ecore:EReference diagram.ecore#//ConditionalInsideLabelStyle/style"/>
     </genClasses>
diff --git a/packages/view/backend/sirius-components-view-edit/pom.xml b/packages/view/backend/sirius-components-view-edit/pom.xml
index 3d7b7d6052b..0f074a52b0e 100644
--- a/packages/view/backend/sirius-components-view-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-edit</name>
 	<description>Sirius Components View Definition DSL - Edit Support</description>
 
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-emf-widget-reference/pom.xml b/packages/view/backend/sirius-components-view-emf-widget-reference/pom.xml
index c65c3af9ae6..80b5f3199ee 100644
--- a/packages/view/backend/sirius-components-view-emf-widget-reference/pom.xml
+++ b/packages/view/backend/sirius-components-view-emf-widget-reference/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-emf-widget-reference</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-emf-widget-reference</name>
 	<description>Sirius Components View EMF Widget Reference</description>
 
@@ -32,17 +32,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -52,13 +52,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/view/backend/sirius-components-view-emf-widget-table/pom.xml b/packages/view/backend/sirius-components-view-emf-widget-table/pom.xml
index dacb4eff519..82708e02fca 100644
--- a/packages/view/backend/sirius-components-view-emf-widget-table/pom.xml
+++ b/packages/view/backend/sirius-components-view-emf-widget-table/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-emf-widget-table</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-emf-widget-table</name>
 	<description>Sirius Components View EMF Widget Table</description>
 
@@ -32,17 +32,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -52,13 +52,13 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/view/backend/sirius-components-view-emf/pom.xml b/packages/view/backend/sirius-components-view-emf/pom.xml
index fa74240ed09..71d88710815 100644
--- a/packages/view/backend/sirius-components-view-emf/pom.xml
+++ b/packages/view/backend/sirius-components-view-emf/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-emf</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-emf</name>
 	<description>Sirius Components View EMF</description>
 
@@ -32,82 +32,82 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-domain</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-selection</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-diagram</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-collaborative-trees</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf-forms</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-emf-tables</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-deck</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -117,19 +117,19 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-diagrams-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
diff --git a/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/StylesFactory.java b/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/StylesFactory.java
index 7dc1ee6ec98..c9bf85b975e 100644
--- a/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/StylesFactory.java
+++ b/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/StylesFactory.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2021, 2025 Obeo.
+ * Copyright (c) 2021, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -18,6 +18,7 @@
 
 import org.eclipse.sirius.components.core.api.ILabelService;
 import org.eclipse.sirius.components.diagrams.ArrowStyle;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.EdgeStyle;
 import org.eclipse.sirius.components.diagrams.EdgeType;
 import org.eclipse.sirius.components.diagrams.ILayoutStrategy;
@@ -34,6 +35,7 @@
 import org.eclipse.sirius.components.representations.VariableManager;
 import org.eclipse.sirius.components.view.FixedColor;
 import org.eclipse.sirius.components.view.UserColor;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
 import org.eclipse.sirius.components.view.diagram.IconLabelNodeStyleDescription;
 import org.eclipse.sirius.components.view.diagram.InsideLabelStyle;
 import org.eclipse.sirius.components.view.diagram.NodeStyleDescription;
@@ -124,6 +126,16 @@ public String getNodeType(NodeStyleDescription nodeStyleDescription) {
         return type.orElse(NodeType.NODE_RECTANGLE);
     }
 
+    public DiagramStyle createDiagramStyle(DiagramStyleDescription diagramStyleDescription) {
+        return DiagramStyle.newDiagramStyle()
+                .background(Optional.ofNullable(diagramStyleDescription.getBackground())
+                        .filter(FixedColor.class::isInstance)
+                        .map(FixedColor.class::cast)
+                        .map(FixedColor::getValue)
+                        .orElse(DEFAULT_TRANSPARENT_COLOR))
+                .build();
+    }
+
     public INodeStyle createNodeStyle(NodeStyleDescription nodeStyle, ILayoutStrategy childrenLayoutStrategy, VariableManager variableManager) {
         INodeStyle result = null;
         switch (this.getNodeType(nodeStyle)) {
@@ -131,6 +143,7 @@ public INodeStyle createNodeStyle(NodeStyleDescription nodeStyle, ILayoutStrateg
                 result = IconLabelNodeStyle.newIconLabelNodeStyle()
                         .background("transparent")
                         .childrenLayoutStrategy(childrenLayoutStrategy)
+                        .background(DEFAULT_TRANSPARENT_COLOR)
                         .build();
                 break;
             case NodeType.NODE_RECTANGLE:
diff --git a/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/ViewDiagramDescriptionConverter.java b/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/ViewDiagramDescriptionConverter.java
index 354a0336465..8b83e4e9dba 100644
--- a/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/ViewDiagramDescriptionConverter.java
+++ b/packages/view/backend/sirius-components-view-emf/src/main/java/org/eclipse/sirius/components/view/emf/diagram/ViewDiagramDescriptionConverter.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2022, 2025 Obeo.
+ * Copyright (c) 2022, 2026 Obeo.
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
@@ -29,6 +29,7 @@
 import org.eclipse.sirius.components.core.api.IIdentityService;
 import org.eclipse.sirius.components.core.api.ILabelService;
 import org.eclipse.sirius.components.diagrams.ArrangeLayoutDirection;
+import org.eclipse.sirius.components.diagrams.DiagramStyle;
 import org.eclipse.sirius.components.diagrams.EdgeStyle;
 import org.eclipse.sirius.components.diagrams.FreeFormLayoutStrategy;
 import org.eclipse.sirius.components.diagrams.HeaderSeparatorDisplayMode;
@@ -65,10 +66,12 @@
 import org.eclipse.sirius.components.representations.IStatus;
 import org.eclipse.sirius.components.representations.VariableManager;
 import org.eclipse.sirius.components.view.RepresentationDescription;
+import org.eclipse.sirius.components.view.diagram.ConditionalDiagramStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalInsideLabelStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalNodeStyle;
 import org.eclipse.sirius.components.view.diagram.ConditionalOutsideLabelStyle;
 import org.eclipse.sirius.components.view.diagram.DiagramElementDescription;
+import org.eclipse.sirius.components.view.diagram.DiagramStyleDescription;
 import org.eclipse.sirius.components.view.diagram.DropNodeTool;
 import org.eclipse.sirius.components.view.diagram.DropTool;
 import org.eclipse.sirius.components.view.diagram.FreeFormLayoutStrategyDescription;
@@ -146,6 +149,11 @@ public ViewConverterResult convert(RepresentationDescription viewRepresentationD
         List<EdgeDescription> edgeDescriptions = Stream.concat(edgeDescriptionsWithNodesAsSourceOrTarget.stream(), edgeDescriptionsWithAnotherEdgeAsSourceOrTarget.stream())
                 .map(edge -> this.convert(edge, converterContext, stylesFactory)).toList();
 
+        Function<VariableManager, DiagramStyle> styleProvider = variableManager -> {
+            var effectiveStyle = this.findEffectiveDiagramStyle(viewDiagramDescription, interpreter, variableManager);
+            return stylesFactory.createDiagramStyle(effectiveStyle);
+        };
+
         var builder = DiagramDescription.newDiagramDescription(this.diagramIdProvider.getId(viewDiagramDescription))
                 .label(Optional.ofNullable(viewDiagramDescription.getName()).orElse(DEFAULT_DIAGRAM_LABEL))
                 .labelProvider(variableManager -> this.computeDiagramLabel(viewDiagramDescription, variableManager, interpreter))
@@ -166,7 +174,8 @@ public org.eclipse.sirius.components.view.diagram.DiagramDescription getSourceDi
                 .nodeDescriptions(nodeDescriptions)
                 .edgeDescriptions(edgeDescriptions)
                 .dropHandler(this.createDiagramDropHandler(viewDiagramDescription, converterContext))
-                .iconURLsProvider(new ViewIconURLsProvider(interpreter, viewDiagramDescription.getIconExpression()));
+                .iconURLsProvider(new ViewIconURLsProvider(interpreter, viewDiagramDescription.getIconExpression()))
+                .styleProvider(styleProvider);
 
         new ToolFinder().findDropNodeTool(viewDiagramDescription).ifPresent(dropNoteTool -> {
             builder.dropNodeHandler(this.createDropNodeHandler(dropNoteTool, converterContext));
@@ -263,12 +272,12 @@ private NodeDescription convert(org.eclipse.sirius.components.view.diagram.NodeD
 
         AQLInterpreter interpreter = converterContext.getInterpreter();
         Function<VariableManager, String> typeProvider = variableManager -> {
-            var effectiveStyle = this.findEffectiveStyle(viewNodeDescription, interpreter, variableManager);
+            var effectiveStyle = this.findEffectiveNodeStyle(viewNodeDescription, interpreter, variableManager);
             return stylesFactory.getNodeType(effectiveStyle);
         };
 
         Function<VariableManager, INodeStyle> styleProvider = variableManager -> {
-            var effectiveStyle = this.findEffectiveStyle(viewNodeDescription, interpreter, variableManager);
+            var effectiveStyle = this.findEffectiveNodeStyle(viewNodeDescription, interpreter, variableManager);
             ILayoutStrategy childrenLayoutStrategy = new FreeFormLayoutStrategy(); // FreeForm as default value
 
             LayoutStrategyDescription childrenLayoutStrategyFromViewModel = effectiveStyle.getChildrenLayoutStrategy();
@@ -402,12 +411,19 @@ private Integer computeDefaultSizeProvider(String defaultSizeExpression, AQLInte
         return null;
     }
 
-    private NodeStyleDescription findEffectiveStyle(org.eclipse.sirius.components.view.diagram.NodeDescription viewNodeDescription, AQLInterpreter interpreter, VariableManager variableManager) {
+    private NodeStyleDescription findEffectiveNodeStyle(org.eclipse.sirius.components.view.diagram.NodeDescription viewNodeDescription, AQLInterpreter interpreter, VariableManager variableManager) {
         return viewNodeDescription.getConditionalStyles().stream().filter(style -> this.matches(interpreter, style.getCondition(), variableManager))
                 .map(ConditionalNodeStyle::getStyle).findFirst()
                 .orElseGet(viewNodeDescription::getStyle);
     }
 
+    private DiagramStyleDescription findEffectiveDiagramStyle(org.eclipse.sirius.components.view.diagram.DiagramDescription viewDiagramDescription, AQLInterpreter interpreter,
+            VariableManager variableManager) {
+        return viewDiagramDescription.getConditionalStyles().stream().filter(style -> this.matches(interpreter, style.getCondition(), variableManager))
+                .map(ConditionalDiagramStyle::getStyle).findFirst()
+                .orElseGet(viewDiagramDescription::getStyle);
+    }
+
     private boolean matches(AQLInterpreter interpreter, String condition, VariableManager variableManager) {
         return interpreter.evaluateExpression(variableManager.getVariables(), condition).asBoolean().orElse(Boolean.FALSE);
     }
diff --git a/packages/view/backend/sirius-components-view-form-edit/pom.xml b/packages/view/backend/sirius-components-view-form-edit/pom.xml
index 6561b4465bc..b2079e0973a 100644
--- a/packages/view/backend/sirius-components-view-form-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-form-edit/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-form-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-form-edit</name>
 	<description>Sirius Components Form View Definition DSL - Edit Support</description>
 
@@ -41,12 +41,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-form/pom.xml b/packages/view/backend/sirius-components-view-form/pom.xml
index e8fdf4e4c08..9292c0cc9f7 100644
--- a/packages/view/backend/sirius-components-view-form/pom.xml
+++ b/packages/view/backend/sirius-components-view-form/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-form</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-form</name>
 	<description>Sirius Components Form View Definition DSL</description>
 
@@ -41,7 +41,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-gantt-edit/pom.xml b/packages/view/backend/sirius-components-view-gantt-edit/pom.xml
index 06693168d39..fde92210bcc 100644
--- a/packages/view/backend/sirius-components-view-gantt-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-gantt-edit/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-gantt-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-gantt-edit</name>
 	<description>Sirius Components Gantt View Definition DSL - Edit Support</description>
 
@@ -41,12 +41,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-gantt/pom.xml b/packages/view/backend/sirius-components-view-gantt/pom.xml
index da17c192dfa..ebdac3f0331 100644
--- a/packages/view/backend/sirius-components-view-gantt/pom.xml
+++ b/packages/view/backend/sirius-components-view-gantt/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-gantt</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-gantt</name>
 	<description>Sirius Components Gantt View Definition DSL</description>
 
@@ -41,12 +41,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-gantt</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-table-customcells-edit/pom.xml b/packages/view/backend/sirius-components-view-table-customcells-edit/pom.xml
index 4f3c3eeed16..11fc48cf80f 100644
--- a/packages/view/backend/sirius-components-view-table-customcells-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-table-customcells-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-table-customcells-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-table-customcells-edit</name>
 	<description>Support for additional table custom cells - edit support</description>
 
@@ -47,12 +47,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-customcells</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-table-customcells/pom.xml b/packages/view/backend/sirius-components-view-table-customcells/pom.xml
index 525d4849f85..36d5c2e898e 100644
--- a/packages/view/backend/sirius-components-view-table-customcells/pom.xml
+++ b/packages/view/backend/sirius-components-view-table-customcells/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-table-customcells</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-table-customcells</name>
 	<description>Support for additional table custom cells</description>
 
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-table-edit/pom.xml b/packages/view/backend/sirius-components-view-table-edit/pom.xml
index fb7383e63c9..f95bcb47db0 100644
--- a/packages/view/backend/sirius-components-view-table-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-table-edit/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-table-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-table-edit</name>
 	<description>Sirius Components Table View Definition DSL - Edit Support</description>
 
@@ -41,12 +41,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-table/pom.xml b/packages/view/backend/sirius-components-view-table/pom.xml
index bb53ee6c61a..38de877b85e 100644
--- a/packages/view/backend/sirius-components-view-table/pom.xml
+++ b/packages/view/backend/sirius-components-view-table/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-table</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-table</name>
 	<description>Sirius Components Table View Definition DSL</description>
 
@@ -41,7 +41,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-tree-edit/pom.xml b/packages/view/backend/sirius-components-view-tree-edit/pom.xml
index ed53ba17d75..5bd07accc2f 100644
--- a/packages/view/backend/sirius-components-view-tree-edit/pom.xml
+++ b/packages/view/backend/sirius-components-view-tree-edit/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-tree-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-tree-edit</name>
 	<description>Sirius Components Tree View Definition DSL - Edit Support</description>
 
@@ -41,12 +41,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-tree</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view-tree/pom.xml b/packages/view/backend/sirius-components-view-tree/pom.xml
index 94d35c6cf09..0aefa7f0c7d 100644
--- a/packages/view/backend/sirius-components-view-tree/pom.xml
+++ b/packages/view/backend/sirius-components-view-tree/pom.xml
@@ -17,13 +17,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view-tree</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view-tree</name>
 	<description>Sirius Components Tree View Definition DSL</description>
 
@@ -41,7 +41,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-view/pom.xml b/packages/view/backend/sirius-components-view/pom.xml
index 47d45be696e..be9c50bfbf8 100644
--- a/packages/view/backend/sirius-components-view/pom.xml
+++ b/packages/view/backend/sirius-components-view/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-view</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-view</name>
 	<description>Sirius Components View Definition DSL</description>
 
diff --git a/packages/view/backend/sirius-components-widget-reference-view-edit/pom.xml b/packages/view/backend/sirius-components-widget-reference-view-edit/pom.xml
index 00d10323544..2cccaddc3af 100644
--- a/packages/view/backend/sirius-components-widget-reference-view-edit/pom.xml
+++ b/packages/view/backend/sirius-components-widget-reference-view-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-reference-view-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-reference-view-edit</name>
 	<description>View support for the reference custom widget :: edit support</description>
 
@@ -47,17 +47,17 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-reference-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-widget-reference-view/pom.xml b/packages/view/backend/sirius-components-widget-reference-view/pom.xml
index 622bc99b4fb..9917c07e68c 100644
--- a/packages/view/backend/sirius-components-widget-reference-view/pom.xml
+++ b/packages/view/backend/sirius-components-widget-reference-view/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-reference-view</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-reference-view</name>
 	<description>View support for the reference custom widget</description>
 
@@ -42,7 +42,7 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-widget-table-view-edit/pom.xml b/packages/view/backend/sirius-components-widget-table-view-edit/pom.xml
index 705063325ab..410f9a2eeb9 100644
--- a/packages/view/backend/sirius-components-widget-table-view-edit/pom.xml
+++ b/packages/view/backend/sirius-components-widget-table-view-edit/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-table-view-edit</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-table-view-edit</name>
 	<description>View support for the table custom widget :: edit support</description>
 
@@ -47,22 +47,22 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table-edit</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-widget-table-view</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/view/backend/sirius-components-widget-table-view/pom.xml b/packages/view/backend/sirius-components-widget-table-view/pom.xml
index 356813d5275..c6794574c8b 100644
--- a/packages/view/backend/sirius-components-widget-table-view/pom.xml
+++ b/packages/view/backend/sirius-components-widget-table-view/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-widget-table-view</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-widget-table-view</name>
 	<description>View support for the table custom widget</description>
 
@@ -42,12 +42,12 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-form</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-view-table</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 	</dependencies>
 
diff --git a/packages/web/backend/pom.xml b/packages/web/backend/pom.xml
index eac4a863813..6b4b4aef8f5 100644
--- a/packages/web/backend/pom.xml
+++ b/packages/web/backend/pom.xml
@@ -17,7 +17,7 @@
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-web-root</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 
 	<name>sirius-components-web-root</name>
 	<description>Sirius Components Web Root</description>
diff --git a/packages/web/backend/sirius-components-graphql/pom.xml b/packages/web/backend/sirius-components-graphql/pom.xml
index b66305d6fec..12b589f5339 100644
--- a/packages/web/backend/sirius-components-graphql/pom.xml
+++ b/packages/web/backend/sirius-components-graphql/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-graphql</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-graphql</name>
 	<description>Sirius Components GraphQL</description>
 
@@ -48,18 +48,18 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-graphql-api</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/packages/web/backend/sirius-components-web/pom.xml b/packages/web/backend/sirius-components-web/pom.xml
index f0be64fe7f4..d82dc42964e 100644
--- a/packages/web/backend/sirius-components-web/pom.xml
+++ b/packages/web/backend/sirius-components-web/pom.xml
@@ -18,13 +18,13 @@
 	<parent>
 		<groupId>org.eclipse.sirius</groupId>
 		<artifactId>sirius-web-parent</artifactId>
-		<version>2026.1.6</version>
+		<version>2026.3.0</version>
 		<relativePath>../../../releng/backend/sirius-web-parent</relativePath>
 	</parent>
 
 	<groupId>org.eclipse.sirius</groupId>
 	<artifactId>sirius-components-web</artifactId>
-	<version>2026.1.6</version>
+	<version>2026.3.0</version>
 	<name>sirius-components-web</name>
 	<description>Sirius Components Web</description>
 
@@ -49,18 +49,18 @@
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-core</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse.sirius</groupId>
 			<artifactId>sirius-components-spring-tests</artifactId>
-			<version>2026.1.6</version>
+			<version>2026.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
diff --git a/vscode-extension/package.json b/vscode-extension/package.json
index 63f55cb21ef..15666e1b199 100644
--- a/vscode-extension/package.json
+++ b/vscode-extension/package.json
@@ -4,7 +4,7 @@
   "description": "Sirius Web extension for VSCode",
   "publisher": "eclipse-sirius",
   "license": "EPL-2.0",
-  "version": "2026.1.6",
+  "version": "2026.3.0",
   "homepage": "https://www.eclipse.dev/sirius/sirius-web.html",
   "repository": {
     "type": "git",