diff --git a/changelog/9.0.1.yaml b/changelog/9.0.1.yaml
new file mode 100644
index 0000000000..de10c9bfff
--- /dev/null
+++ b/changelog/9.0.1.yaml
@@ -0,0 +1,49 @@
+version: 9.0.1
+entries:
+    - kind: bug-fix
+      summary: Fix host parsing in Elasticsearch output diagnostics
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/4765
+      issue: []
+      timestamp: 1743692296
+      file:
+        name: 1743692296-fix-url-parsing-es-output-diagnostics.yaml
+        checksum: 6cd827f9b6e9bc06e029b8f6dda743ee5e9d7d27
+    - kind: bug-fix
+      summary: Redact output in bootstrap config logs
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/4775
+      issue: []
+      timestamp: 1744046917
+      file:
+        name: 1744046917-Redact-output-in-bootstrap-config-logs.yaml
+        checksum: 9c205aceff761a5834bb50567d6e5243eb402c8b
+    - kind: bug-fix
+      summary: Mutex protection for remote bulker config
+      description: |
+        Use existing remote bulker mutex to control access to remote bulker configs.
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/4776
+      issue: []
+      timestamp: 1744054552
+      file:
+        name: 1744054552-Mutex-protection-for-remote-bulker-config.yaml
+        checksum: af8b1abeba1b9bbf0aa4f64a2ca494120758aea6
+    - kind: bug-fix
+      summary: Enable dead code elimination
+      description: |
+        Add grpcnotrace build tags and ensure DCE (dead code elimination) is enabled.
+        Reduce binary size by 34%
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/4784
+      issue: []
+      timestamp: 1744852233
+      file:
+        name: 1744852233-enable-dce.yaml
+        checksum: 836d912f8375f0f5a3a946a90afbb50978c431c4
diff --git a/changelog/9.0.2.yaml b/changelog/9.0.2.yaml
new file mode 100644
index 0000000000..db7aadb185
--- /dev/null
+++ b/changelog/9.0.2.yaml
@@ -0,0 +1,13 @@
+version: 9.0.2
+entries:
+    - kind: enhancement
+      summary: Update Go version to v1.24.3
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/4891
+      issue: []
+      timestamp: 1746596216
+      file:
+        name: 1746596216-Update-to-go-1.24.3.yaml
+        checksum: 5f97bc9a96cf140dba16165d6e8472f9bcc92e44
diff --git a/changelog/9.0.3.yaml b/changelog/9.0.3.yaml
new file mode 100644
index 0000000000..768c67a844
--- /dev/null
+++ b/changelog/9.0.3.yaml
@@ -0,0 +1,13 @@
+version: 9.0.3
+entries:
+    - kind: enhancement
+      summary: Update Go version to v1.24.4
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/5025
+      issue: []
+      timestamp: 1746596216
+      file:
+        name: 1746596216-Update-to-go-1.24.4.yaml
+        checksum: 5f97bc9a96cf140dba16165d6e8472f9bcc92e44
diff --git a/changelog/9.0.4.yaml b/changelog/9.0.4.yaml
new file mode 100644
index 0000000000..33f092782b
--- /dev/null
+++ b/changelog/9.0.4.yaml
@@ -0,0 +1,13 @@
+version: 9.0.4
+entries:
+    - kind: bug-fix
+      summary: Include the base error for json decode error responses.
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/5069
+      issue: []
+      timestamp: 1750971846
+      file:
+        name: 1750971846-Include-error-on-json-decode-error-responses.yaml
+        checksum: 3f2eb0595d1edbb7a31ecf2e2d49dd712f481f96
diff --git a/changelog/9.0.5.yaml b/changelog/9.0.5.yaml
new file mode 100644
index 0000000000..865fe93e6c
--- /dev/null
+++ b/changelog/9.0.5.yaml
@@ -0,0 +1,16 @@
+version: 9.0.5
+entries:
+    - kind: bug-fix
+      summary: Fix upgrade details download_rate as string handling
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/5217
+        - https://github.com/elastic/fleet-server/pull/5227
+        - https://github.com/elastic/fleet-server/pull/5176
+      issue:
+        - https://github.com/elastic/fleet-server/issues/5164
+      timestamp: 1753372819
+      file:
+        name: 1753372819-Fix-download_rate-as-string-handling.yaml
+        checksum: 492e665f43229a00e0b0a1590387273b77e26b36
diff --git a/changelog/9.0.6.yaml b/changelog/9.0.6.yaml
new file mode 100644
index 0000000000..4be7a5ac36
--- /dev/null
+++ b/changelog/9.0.6.yaml
@@ -0,0 +1,25 @@
+version: 9.0.6
+entries:
+    - kind: bug-fix
+      summary: Fix 503 handling in enrollment
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/5232
+      issue:
+        - https://github.com/elastic/fleet-server/issues/5197
+      timestamp: 1754931919
+      file:
+        name: 1754931919-Fix-503-handling-in-enrollment.yaml
+        checksum: b6c03da0ddbd3a2b4f742d952a5d7178e77a9ac3
+    - kind: bug-fix
+      summary: Remove extra ES search when preparing agent policy
+      description: ""
+      component: fleet-server
+      pr:
+        - https://github.com/elastic/fleet-server/pull/5283
+      issue: []
+      timestamp: 1755644662
+      file:
+        name: 1755644662-Remove-extra-ES-search-when-preparing-agent-policy.yaml
+        checksum: 0814e746cce14762e3d22aeee0c5f6fad0eda38c
diff --git a/changelog/9.1.2.yaml b/changelog/9.1.2.yaml
new file mode 100644
index 0000000000..aac064c33a
--- /dev/null
+++ b/changelog/9.1.2.yaml
@@ -0,0 +1,2 @@
+version: 9.1.2
+entries:
\ No newline at end of file
diff --git a/config.changelog.yaml b/config.changelog.yaml
new file mode 100644
index 0000000000..2ec77159b8
--- /dev/null
+++ b/config.changelog.yaml
@@ -0,0 +1,3 @@
+owner: elastic
+repo: fleet-server
+rendered_changelog_destination: docs/release-notes/_snippets
\ No newline at end of file
diff --git a/docs/docset.yml b/docs/docset.yml
new file mode 100644
index 0000000000..41a48c3289
--- /dev/null
+++ b/docs/docset.yml
@@ -0,0 +1,19 @@
+project: Fleet Server docs
+products:
+  - id: fleet
+exclude:
+  - "*.md"
+cross_links:
+  - docs-content
+  - beats
+toc:
+  - toc: release-notes
+subs:
+  agent:                "Elastic Agent"
+  agents:               "Elastic Agents"
+  beats:                "Beats"
+  elastic-defend:       "Elastic Defend"
+  fleet-server-issue:   "https://github.com/elastic/fleet-server/issues/"
+  fleet-server-pull:    "https://github.com/elastic/fleet-server/pull/"
+  fleet:                "Fleet"
+  kib-pull:             "https://github.com/elastic/kibana/pull/"
diff --git a/docs/release-notes/_snippets/9.0.0/breaking.md b/docs/release-notes/_snippets/9.0.0/breaking.md
new file mode 100644
index 0000000000..9cd4175938
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.0/breaking.md
@@ -0,0 +1,55 @@
+## 9.0.0 [fleet-server-9.0.0-breaking-changes]
+
+::::{dropdown} Removed deprecated epm Fleet APIs
+Removed `GET/POST/DELETE /epm/packages/:pkgkey` APIs in favor of the `GET/POST/DELETE /epm/packages/:pkgName/:pkgVersion`.
+
+**Impact**<br>
+* Removed `experimental` query parameter in `GET /epm/packages` and `GET /epm/categories`
+* Removed `response` in response in `* /epm/packages*` and `GET /epm/categories`
+* Removed `savedObject` in `/epm/packages` response in favor of `installationInfo`
+
+For more information, check [#198434]({{kib-pull}}198434).
+::::
+
+::::{dropdown} Removed deprecated Fleet APIs for agents endpoints
+Removed the following API endpoints:
+
+* `POST /service-tokens` in favor of `POST /service_tokens`
+* `GET /agent-status` in favor `GET /agent_status`
+* `PUT /agents/:agentid/reassign` in favor of `POST /agents/:agentid/reassign`
+
+Removed deprecated parameters or responses:
+
+* Removed `total` from `GET /agent_status` response
+* Removed `list` from `GET /agents` response
+
+For more information, check [#198313]({{kib-pull}}198313).
+::::
+
+::::{dropdown} Removed deprecated settings API endpoints in Fleet
+* `GET/DELETE/POST enrollment-api-keys`: removed in favor of `GET/DELETE/POST enrollment_api_keys`
+* Removed `list` property from `GET enrollment_api_keys` response in favor of `items`
+* `GET/POST /settings`: `fleet_server_hosts` was removed from the response and body
+
+For more information, check [#198799]({{kib-pull}}198799).
+::::
+
+::::{dropdown} Removed deprecated settings API endpoints in Fleet
+* `GET/DELETE/POST enrollment-api-keys`: removed in favor of `GET/DELETE/POST enrollment_api_keys`
+* Removed `list` property from `GET enrollment_api_keys` response in favor of `items`
+* `GET/POST /settings`: `fleet_server_hosts` was removed from the response and body
+
+For more information, check [#198799]({{kib-pull}}198799).
+::::
+
+::::{dropdown} Removed deprecated topics property for kafka output in favor of the topic property
+Removed deprecated property `topics` from output APIs in response and requests (`(GET|POST|PUT) /api/fleet/outputs`) in favor of the `topic` property.
+
+For more information, check [#199226]({{kib-pull}}199226).
+::::
+
+::::{dropdown} Limit pagination size to 100 when retrieving full policy or withAgentCount in Fleet
+In addition to the new pagination limit size of 100, retrieving agent policies without agent count is now the new default behavior, and a new query parameter `withAgentCount` was added to retrieve the agent count.
+
+For more information, check [#196887]({{kib-pull}}196887).
+::::
diff --git a/docs/release-notes/_snippets/9.0.0/deprecations.md b/docs/release-notes/_snippets/9.0.0/deprecations.md
new file mode 100644
index 0000000000..2a2ce5f4b5
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.0/deprecations.md
@@ -0,0 +1,3 @@
+## 9.0.0 [fleet-server-9.0.0-deprecations]
+
+_No deprecations in this release._
diff --git a/docs/release-notes/_snippets/9.0.0/index.md b/docs/release-notes/_snippets/9.0.0/index.md
new file mode 100644
index 0000000000..b822885ab6
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.0/index.md
@@ -0,0 +1,21 @@
+## 9.0.0 [fleet-server-9.0.0-release-notes]
+
+### Features and enhancements [fleet-server-9.0.0-features-enhancements]
+
+* New setting allowing automatic deletion of unenrolled agents in Fleet settings. [#195544]({{kib-pull}}195544)
+* Improves filtering and visibility of Uninstalled and Orphaned agents in Fleet, by differentiating them from Offline agents. [#205815]({{kib-pull}}205815)
+* Introduces air-gapped configuration for bundled packages in Fleet. [#202435]({{kib-pull}}202435)
+* Updates removed parameters of the Fleet -> Logstash output configurations. [#210115]({{kib-pull}}210115)
+* Updates the maximum supported package version in Fleet. [#196675]({{kib-pull}}196675)
+* Replaces the use of context.TODO and context.Background in logger function calls for most Fleet Server use cases. [#4168]({{fleet-server-pull}}4168) and [#3087]({{fleet-server-issue}}3087)
+* Refactor the Fleet Server API constructor to use functional opts instead of a long list of pointers. [#4169]({{fleet-server-pull}}4169) and [#3823]({{fleet-server-issue}}3823)
+* Removes the deprecated policy_throttle configuration setting in favour of the newer policy-limit for Fleet Server. [#4288]({{fleet-server-pull}}4288)
+* Removes old bundled.yaml from oas, fixed tags. [#194788]({{kib-pull}}194788)
+* Adds the ability for Elastic Agent to enroll using a specific ID. [#4290]({{fleet-server-pull}}4290) and [#4226]({{fleet-server-issue}}4226)
+
+### Fixes [fleet-server-9.0.0-fixes]
+
+* Fixes a validation error that occurs on multi-text input fields in Fleet. [#205768]({{kib-pull}}205768)
+* Adds a context timeout to the bulker flush in Fleet Server so it times out if it takes more time than the deadline. [#3986]({{fleet-server-pull}}3986)
+* Removes a race condition that may occur when remote Elasticsearch outputs are used in Fleet Server. [#4171]({{fleet-server-pull}}4171)
+* Uses the chi/middleware.Throttle package to track in-flight requests and return a 429 response when the limit is reached in Fleet Server. [#4402]({{fleet-server-pull}}4402) and [#4400]({{fleet-server-issue}}4400)
\ No newline at end of file
diff --git a/docs/release-notes/_snippets/9.0.1/breaking.md b/docs/release-notes/_snippets/9.0.1/breaking.md
new file mode 100644
index 0000000000..143035266c
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.1/breaking.md
@@ -0,0 +1,3 @@
+## 9.0.1 [fleet-server-9.0.1-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.0.1/deprecations.md b/docs/release-notes/_snippets/9.0.1/deprecations.md
new file mode 100644
index 0000000000..68493ac8e5
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.1/deprecations.md
@@ -0,0 +1,3 @@
+## 9.0.1 [fleet-server-9.0.1-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.0.1/index.md b/docs/release-notes/_snippets/9.0.1/index.md
new file mode 100644
index 0000000000..36640df855
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.1/index.md
@@ -0,0 +1,14 @@
+## 9.0.1 [fleet-server-release-notes-9.0.1]
+
+### Fixes [fleet-server-9.0.1-fixes]
+
+* Fix host parsing in Elasticsearch output diagnostics. [#4765](https://github.com/elastic/fleet-server/pull/4765)
+* Redact output in bootstrap config logs. [#4775](https://github.com/elastic/fleet-server/pull/4775)
+* Mutex protection for remote bulker config. [#4776](https://github.com/elastic/fleet-server/pull/4776)
+
+  Use existing remote bulker mutex to control access to remote bulker configs.
+
+* Enable dead code elimination. [#4784](https://github.com/elastic/fleet-server/pull/4784)
+
+  Add grpcnotrace build tags and ensure DCE (dead code elimination) is enabled.
+  Reduce binary size by 34%
diff --git a/docs/release-notes/_snippets/9.0.2/breaking.md b/docs/release-notes/_snippets/9.0.2/breaking.md
new file mode 100644
index 0000000000..48d63f53db
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.2/breaking.md
@@ -0,0 +1,3 @@
+## 9.0.2 [fleet-server-9.0.2-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.0.2/deprecations.md b/docs/release-notes/_snippets/9.0.2/deprecations.md
new file mode 100644
index 0000000000..b70d54aeeb
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.2/deprecations.md
@@ -0,0 +1,3 @@
+## 9.0.2 [fleet-server-9.0.2-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.0.2/index.md b/docs/release-notes/_snippets/9.0.2/index.md
new file mode 100644
index 0000000000..b8a3c688b3
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.2/index.md
@@ -0,0 +1,9 @@
+## 9.0.2 [fleet-server-release-notes-9.0.2]
+
+
+### Features and enhancements [fleet-server-9.0.2-features-enhancements]
+
+* Update Go version to v1.24.3. [#4891](https://github.com/elastic/fleet-server/pull/4891)
+
+
+
diff --git a/docs/release-notes/_snippets/9.0.3/breaking.md b/docs/release-notes/_snippets/9.0.3/breaking.md
new file mode 100644
index 0000000000..6b659975ca
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.3/breaking.md
@@ -0,0 +1,3 @@
+## 9.0.3 [fleet-server-9.0.3-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.0.3/deprecations.md b/docs/release-notes/_snippets/9.0.3/deprecations.md
new file mode 100644
index 0000000000..2231d42947
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.3/deprecations.md
@@ -0,0 +1,3 @@
+## 9.0.3 [fleet-server-9.0.3-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.0.3/index.md b/docs/release-notes/_snippets/9.0.3/index.md
new file mode 100644
index 0000000000..18aaddf023
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.3/index.md
@@ -0,0 +1,9 @@
+## 9.0.3 [fleet-server-release-notes-9.0.3]
+
+
+### Features and enhancements [fleet-server-9.0.3-features-enhancements]
+
+* Update Go version to v1.24.4. [#5025](https://github.com/elastic/fleet-server/pull/5025) 
+
+
+
diff --git a/docs/release-notes/_snippets/9.0.4/breaking.md b/docs/release-notes/_snippets/9.0.4/breaking.md
new file mode 100644
index 0000000000..5ca19534ba
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.4/breaking.md
@@ -0,0 +1,3 @@
+## 9.0.4 [fleet-server-9.0.4-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.0.4/deprecations.md b/docs/release-notes/_snippets/9.0.4/deprecations.md
new file mode 100644
index 0000000000..88ec445323
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.4/deprecations.md
@@ -0,0 +1,3 @@
+## 9.0.4 [fleet-server-9.0.4-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.0.4/index.md b/docs/release-notes/_snippets/9.0.4/index.md
new file mode 100644
index 0000000000..2063907dd9
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.4/index.md
@@ -0,0 +1,5 @@
+## 9.0.4 [fleet-server-release-notes-9.0.4]
+
+### Fixes [fleet-server-9.0.4-fixes]
+
+* Include the base error for JSON decode error responses. [#5069](https://github.com/elastic/fleet-server/pull/5069)
diff --git a/docs/release-notes/_snippets/9.0.5/breaking.md b/docs/release-notes/_snippets/9.0.5/breaking.md
new file mode 100644
index 0000000000..709c982d4f
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.5/breaking.md
@@ -0,0 +1,3 @@
+## 9.0.5 [fleet-server-9.0.5-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.0.5/deprecations.md b/docs/release-notes/_snippets/9.0.5/deprecations.md
new file mode 100644
index 0000000000..aad928d194
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.5/deprecations.md
@@ -0,0 +1,3 @@
+## 9.0.5 [fleet-server-9.0.5-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.0.5/index.md b/docs/release-notes/_snippets/9.0.5/index.md
new file mode 100644
index 0000000000..82eff54543
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.5/index.md
@@ -0,0 +1,9 @@
+## 9.0.5 [fleet-server-release-notes-9.0.5]
+
+
+
+
+### Fixes [fleet-server-9.0.5-fixes]
+
+* Fix upgrade details download_rate as string handling. [#5217](https://github.com/elastic/fleet-server/pull/5217) [#5227](https://github.com/elastic/fleet-server/pull/5227) [#5176](https://github.com/elastic/fleet-server/pull/5176) [#5164](https://github.com/elastic/fleet-server/issues/5164)
+
diff --git a/docs/release-notes/_snippets/9.0.6/breaking.md b/docs/release-notes/_snippets/9.0.6/breaking.md
new file mode 100644
index 0000000000..092b3c2322
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.6/breaking.md
@@ -0,0 +1,3 @@
+## 9.0.6 [fleet-server-9.0.6-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.0.6/deprecations.md b/docs/release-notes/_snippets/9.0.6/deprecations.md
new file mode 100644
index 0000000000..e8e9ed5e9a
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.6/deprecations.md
@@ -0,0 +1,3 @@
+## 9.0.6 [fleet-server-9.0.6-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.0.6/index.md b/docs/release-notes/_snippets/9.0.6/index.md
new file mode 100644
index 0000000000..2d8d082660
--- /dev/null
+++ b/docs/release-notes/_snippets/9.0.6/index.md
@@ -0,0 +1,7 @@
+## 9.0.6 [fleet-server-release-notes-9.0.6]
+
+### Fixes [fleet-server-9.0.6-fixes]
+
+* Fix 503 handling in enrollment. [#5232](https://github.com/elastic/fleet-server/pull/5232) [#5197](https://github.com/elastic/fleet-server/issues/5197)
+* Remove extra ES search when preparing agent policy. [#5283](https://github.com/elastic/fleet-server/pull/5283)
+
diff --git a/docs/release-notes/_snippets/9.1.0/breaking.md b/docs/release-notes/_snippets/9.1.0/breaking.md
new file mode 100644
index 0000000000..63c9f7d2ec
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.0/breaking.md
@@ -0,0 +1,3 @@
+## 9.1.0 [fleet-server-9.1.0-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.1.0/deprecations.md b/docs/release-notes/_snippets/9.1.0/deprecations.md
new file mode 100644
index 0000000000..2ce5f1ebe4
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.0/deprecations.md
@@ -0,0 +1,3 @@
+## 9.1.0 [fleet-server-9.1.0-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.1.0/index.md b/docs/release-notes/_snippets/9.1.0/index.md
new file mode 100644
index 0000000000..c34d07f32e
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.0/index.md
@@ -0,0 +1,34 @@
+## 9.1.0 [fleet-server-release-notes-9.1.0]
+
+
+### Features and enhancements [fleet-server-9.1.0-features-enhancements]
+
+* Add ability for enrollment to take an agent ID. [#4290](https://github.com/elastic/fleet-server/pull/4290) [#4226](https://github.com/elastic/fleet-server/issues/4226)
+* Add migrate-action. [#4786](https://github.com/elastic/fleet-server/pull/4786)
+
+  Added new MIGRATE action type for moving agent to different cluster.
+* Clear `agent.upgrade_attempts` when upgrade is complete. [#4528](https://github.com/elastic/fleet-server/pull/4528)
+
+  The new AutomaticAgentUpgradeTask Kibana task sets the upgrade_attempts property in agents it upgrades.
+  This property is used to track upgrade retries and should therefore be cleared when the upgrade is complete.
+* Make pbkdf2 settings validation FIPS compliant. [#4542](https://github.com/elastic/fleet-server/pull/4542)
+* Update Go to v1.24.3. [#4891](https://github.com/elastic/fleet-server/pull/4891)
+* Add version metadata to version command output. [#4820](https://github.com/elastic/fleet-server/pull/4820)
+
+  Add commit, buildtime, and FIPS distribution indicators to output of version command.
+  Add fips-distribution attribute to initial startup log.
+* Add rollback attribute to upgrade actions in preparation for enabling upgrade rollbacks in a future release. [#4838](https://github.com/elastic/fleet-server/issues/4838)
+
+### Fixes [fleet-server-9.1.0-fixes]
+
+* Upgrade golang.org/x/net to v0.34.0 and golang.org/x/crypto to v0.32.0. [#4405](https://github.com/elastic/fleet-server/pull/4405)
+* Fix host parsing in Elasticsearch output diagnostics. [#4765](https://github.com/elastic/fleet-server/pull/4765)
+* Redact output in bootstrap config logs. [#4775](https://github.com/elastic/fleet-server/pull/4775)
+* Mutex protection for remote bulker config. [#4776](https://github.com/elastic/fleet-server/pull/4776)
+
+  Use existing remote bulker mutex to control access to remote bulker configs.
+* Enable dead code elimination. [#4784](https://github.com/elastic/fleet-server/pull/4784)
+
+  Add grpcnotrace build tags and ensure DCE (dead code elimination) is enabled.
+  Reduce binary size by 34%
+* Include the base error for json decode error responses. [#5069](https://github.com/elastic/fleet-server/pull/5069)
diff --git a/docs/release-notes/_snippets/9.1.1/breaking.md b/docs/release-notes/_snippets/9.1.1/breaking.md
new file mode 100644
index 0000000000..65eb529188
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.1/breaking.md
@@ -0,0 +1,3 @@
+## 9.1.1 [fleet-server-9.1.1-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.1.1/deprecations.md b/docs/release-notes/_snippets/9.1.1/deprecations.md
new file mode 100644
index 0000000000..6def21b934
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.1/deprecations.md
@@ -0,0 +1,3 @@
+## 9.1.1 [fleet-server-9.1.1-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.1.1/index.md b/docs/release-notes/_snippets/9.1.1/index.md
new file mode 100644
index 0000000000..0fa9bd1499
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.1/index.md
@@ -0,0 +1,6 @@
+## 9.1.1 [fleet-server-release-notes-9.1.1]
+
+### Fixes [fleet-server-9.1.1-fixes]
+
+* Fix upgrade details download_rate as string handling. [#5198](https://github.com/elastic/fleet-server/pull/5198) [#5214](https://github.com/elastic/fleet-server/pull/5214) [#5183](https://github.com/elastic/fleet-server/pull/5183) [#5176](https://github.com/elastic/fleet-server/pull/5176) [#5164](https://github.com/elastic/fleet-server/issues/5164)
+
diff --git a/docs/release-notes/_snippets/9.1.2/breaking.md b/docs/release-notes/_snippets/9.1.2/breaking.md
new file mode 100644
index 0000000000..37b3a3bc3d
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.2/breaking.md
@@ -0,0 +1,3 @@
+## 9.1.2 [fleet-server-9.1.2-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.1.2/deprecations.md b/docs/release-notes/_snippets/9.1.2/deprecations.md
new file mode 100644
index 0000000000..edabe73fad
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.2/deprecations.md
@@ -0,0 +1,3 @@
+## 9.1.2 [fleet-server-9.1.2-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.1.2/index.md b/docs/release-notes/_snippets/9.1.2/index.md
new file mode 100644
index 0000000000..660855f5e5
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.2/index.md
@@ -0,0 +1,4 @@
+## 9.1.2 [fleet-server-release-notes-9.1.2]
+
+
+_No new features, enhancements, or fixes._
diff --git a/docs/release-notes/_snippets/9.1.3/breaking.md b/docs/release-notes/_snippets/9.1.3/breaking.md
new file mode 100644
index 0000000000..7624e04c96
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.3/breaking.md
@@ -0,0 +1,3 @@
+## 9.1.3 [fleet-server-9.1.3-breaking-changes]
+
+_No breaking changes._
diff --git a/docs/release-notes/_snippets/9.1.3/deprecations.md b/docs/release-notes/_snippets/9.1.3/deprecations.md
new file mode 100644
index 0000000000..b077b98c0c
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.3/deprecations.md
@@ -0,0 +1,3 @@
+## 9.1.3 [fleet-server-9.1.3-deprecations]
+
+_No deprecations._
diff --git a/docs/release-notes/_snippets/9.1.3/index.md b/docs/release-notes/_snippets/9.1.3/index.md
new file mode 100644
index 0000000000..327ec2ebfa
--- /dev/null
+++ b/docs/release-notes/_snippets/9.1.3/index.md
@@ -0,0 +1,7 @@
+## 9.1.3 [fleet-server-release-notes-9.1.3]
+
+### Fixes [fleet-server-9.1.3-fixes]
+
+* Fix 503 handling in enrollment. [#5232](https://github.com/elastic/fleet-server/pull/5232) [#5197](https://github.com/elastic/fleet-server/issues/5197)
+* Remove extra ES search when preparing agent policy. [#5283](https://github.com/elastic/fleet-server/pull/5283)
+
diff --git a/docs/release-notes/_snippets/breaking-changes.md b/docs/release-notes/_snippets/breaking-changes.md
new file mode 100644
index 0000000000..ddf448615d
--- /dev/null
+++ b/docs/release-notes/_snippets/breaking-changes.md
@@ -0,0 +1,32 @@
+:::{include} /release-notes/_snippets/9.1.3/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.2/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.1/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.0/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.6/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.5/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.4/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.3/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.2/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.1/breaking.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.0/breaking.md
+:::
diff --git a/docs/release-notes/_snippets/deprecations.md b/docs/release-notes/_snippets/deprecations.md
new file mode 100644
index 0000000000..4c96ecc6cb
--- /dev/null
+++ b/docs/release-notes/_snippets/deprecations.md
@@ -0,0 +1,32 @@
+:::{include} /release-notes/_snippets/9.1.3/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.2/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.1/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.0/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.6/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.5/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.4/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.3/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.2/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.1/deprecations.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.0/deprecations.md
+:::
diff --git a/docs/release-notes/_snippets/index.md b/docs/release-notes/_snippets/index.md
new file mode 100644
index 0000000000..373f1bc3c8
--- /dev/null
+++ b/docs/release-notes/_snippets/index.md
@@ -0,0 +1,32 @@
+:::{include} /release-notes/_snippets/9.1.3/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.2/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.1/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.1.0/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.6/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.5/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.4/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.3/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.2/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.1/index.md
+:::
+
+:::{include} /release-notes/_snippets/9.0.0/index.md
+:::
diff --git a/docs/release-notes/breaking-changes.md b/docs/release-notes/breaking-changes.md
new file mode 100644
index 0000000000..496556aced
--- /dev/null
+++ b/docs/release-notes/breaking-changes.md
@@ -0,0 +1,16 @@
+---
+navigation_title: Breaking changes
+products:
+  - id: fleet
+applies_to:
+  stack: ga
+sub:
+  product: Fleet Server
+---
+
+# {{product}} breaking changes
+
+Breaking changes can impact your Elastic applications, potentially disrupting normal operations. Before you upgrade, carefully review the {{product}} breaking changes and take the necessary steps to mitigate any issues. To learn how to upgrade, check [Upgrade](docs-content://deploy-manage/upgrade.md).
+
+:::{include} /release-notes/_snippets/breaking-changes.md
+:::
diff --git a/docs/release-notes/deprecations.md b/docs/release-notes/deprecations.md
new file mode 100644
index 0000000000..35817d5bd0
--- /dev/null
+++ b/docs/release-notes/deprecations.md
@@ -0,0 +1,18 @@
+---
+navigation_title: Deprecations
+products:
+  - id: fleet
+applies_to:
+  stack: ga
+sub:
+  product: Fleet Server
+---
+
+# {{product}} deprecations
+
+Over time, certain Elastic functionality becomes outdated and is replaced or removed. To help with the transition, Elastic deprecates functionality for a period before removal, giving you time to update your applications.
+
+Review the deprecated functionality for {{product}}. While deprecations have no immediate impact, we strongly encourage you update your implementation after you upgrade. To learn how to upgrade, check out [Upgrade](docs-content://deploy-manage/upgrade.md).
+
+:::{include} /release-notes/_snippets/deprecations.md
+:::
diff --git a/docs/release-notes/index.md b/docs/release-notes/index.md
new file mode 100644
index 0000000000..cc7eeaceb7
--- /dev/null
+++ b/docs/release-notes/index.md
@@ -0,0 +1,26 @@
+---
+navigation_title: Fleet Server
+mapped_pages:
+  - https://www.elastic.co/guide/en/fleet/current/release-notes.html
+products:
+  - id: fleet
+applies_to:
+  stack: ga
+sub:
+  product: Fleet Server
+---
+
+% Release notes include only features, enhancements, and fixes. Add breaking changes, deprecations, and known issues to the applicable release notes sections.
+
+# {{product}} release notes
+
+Review the changes, fixes, and more in each version of {{product}}.
+
+To check for security updates, go to [Security announcements for the Elastic Stack](https://discuss.elastic.co/c/announcements/security-announcements/31).
+
+:::{admonition} Related release notes
+{{agent}} integrates and manages {{beats}} for data collection, and Beats changes may impact {{agent}} functionality. To check for {{agent}} changes in {{beats}}, go to [{{beats}} release notes](beats://release-notes/index.md).
+:::
+
+:::{include} /release-notes/_snippets/index.md
+:::
diff --git a/docs/release-notes/known-issues.md b/docs/release-notes/known-issues.md
new file mode 100644
index 0000000000..fadf93d33a
--- /dev/null
+++ b/docs/release-notes/known-issues.md
@@ -0,0 +1,84 @@
+---
+navigation_title: Known issues
+products:
+  - id: fleet
+applies_to:
+  stack: ga
+sub:
+  product: Fleet Server
+---
+
+# {{product}} known issues
+
+Known issues are significant defects or limitations that may impact your implementation. These issues are actively being worked on and will be addressed in a future release. Review the {{product}} known issues to help you make informed decisions, such as upgrading to a new version.
+
+% Use the following template to add entries to this page.
+
+% :::{dropdown} Title of known issue
+% **Applicable versions for the known issue and the version for when the known issue was fixed**
+% On [Month Day, Year], a known issue was discovered that [description of known issue].
+% For more information, check [Issue #](Issue link).
+
+% **Workaround**
+% Workaround description.
+% :::
+
+
+:::{dropdown} Manual DEB/RPM upgrades of {{fleet}}-managed agents fail when "Agent tamper protection" is enabled
+
+**Applies to**: {{agent}} 8.19.2, 9.1.2
+
+On August 19, 2025, a known issue was discovered where manual DEB/RPM upgrades of {{fleet}}-managed {{agents}} fail if the {{elastic-defend}} integration is installed and **Agent tamper protection** is enabled in the agent policy. When this occurs, the log contains an output similar to the following:
+
+```
+Invalid uninstall token: exit status 28
+```
+
+This issue only impacts manual DEB/RPM upgrades from {{agent}} 8.19.2 or 9.1.2. Managed upgrades performed through {{fleet}} are not affected.
+
+For more information, refer to [PR #9462](https://github.com/elastic/elastic-agent/pull/9462).
+
+**Workaround**
+
+You can use one of the following workarounds to resolve the issue:
+
+- Stop the `elastic-agent` service:
+
+   Before installing the {{agent}} DEB/RPM package, run `systemctl stop elastic-agent`, then proceed with the installation. This solution works even when reinstalling the same version of {{agent}}.
+
+- Temporarily remove the {{elastic-defend}} integration:
+
+   Before upgrading, move the agent to an agent policy without the {{elastic-defend}} integration. Wait for the change to take effect, proceed with the upgrade, then move the agent to its previous policy.
+
+- Disable **Agent tamper protection**:
+
+   Before upgrading, disable **Agent tamper protection** in the agent policy. Wait for the change to take effect, proceed with the upgrade, then move the agent back to its previous policy.
+
+**Fixed in**: {{agent}} 8.19.3, 9.1.3
+:::
+
+:::{dropdown} [Windows] {{agent}} is unable to re-enroll into {{fleet}}
+
+**Applies to**: {{agent}} 9.0.0, 9.0.1, 9.0.2 (Windows only)
+
+On April 9, 2025, a known issue was discovered where an {{agent}} installed on Windows and previously enrolled into {{fleet}} is unable to re-enroll. Attempting to enroll the {{agent}} fails with the following error:
+
+```shell
+Error: the command is executed as root but the program files are not owned by the root user.
+```
+
+For more information, check [Issue #7794](https://github.com/elastic/elastic-agent/issues/7794).
+
+**Workaround**
+
+Until a bug fix is available in a later release, you can resolve the issue temporarily using the following workaround:
+
+1. Change the ownership of the {{agent}} directory:
+
+  ```shell
+  icacls "C:\Program Files\Elastic\Agent" /setowner "NT AUTHORITY\SYSTEM" /t /l
+  ```
+
+2. After the output confirms all files were successfully processed, run the `enroll` command again.
+
+:::
diff --git a/docs/release-notes/toc.yml b/docs/release-notes/toc.yml
new file mode 100644
index 0000000000..0896bfe9bb
--- /dev/null
+++ b/docs/release-notes/toc.yml
@@ -0,0 +1,5 @@
+toc:
+  - file: index.md
+  - file: known-issues.md
+  - file: breaking-changes.md
+  - file: deprecations.md