What's new article (#46505)

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---------

Co-authored-by: IEvangelist <[email protected]>
Co-authored-by: Bill Wagner <[email protected]>

Author: 3 people

docs/whats-new/dotnet-docs-mod2.md

@@ -1,103 +1,80 @@
 ---
-title: ".NET docs: What's new for February 2025"
-description: "What's new in the .NET docs for February 2025."
-ms.custom: February-2025
-ms.date: 03/01/2025
+title: ".NET docs: What's new for May 2025"
+description: "What's new in the .NET docs for May 2025."
+ms.custom: May-2025
+ms.date: 06/01/2025
 ---
 
-# .NET docs: What's new for February 2025
+# .NET docs: What's new for May 2025
 
-Welcome to what's new in the .NET docs for February 2025. This article lists some of the major changes to docs during this period.
+Welcome to what's new in the .NET docs for May 2025. This article lists some of the major changes to docs during this period.
 
 ## .NET breaking changes
 
 ### New articles
 
-- [Ambiguous overload resolution affecting StringValues implicit operators](../core/compatibility/core-libraries/9.0/ambiguous-overload.md)
-- [Default .NET images use Ubuntu](../core/compatibility/containers/10.0/default-images-use-ubuntu.md)
-- [Environment variable renamed to DOTNET_OPENSSL_VERSION_OVERRIDE](../core/compatibility/cryptography/10.0/version-override.md)
-- [MSBUILDCUSTOMBUILDEVENTWARNING escape hatch removed](../core/compatibility/sdk/10.0/custom-build-event-warning.md)
-- [System.Linq.AsyncEnumerable in .NET 10](../core/compatibility/core-libraries/10.0/asyncenumerable.md)
-- [System.Text.Json metadata reader now unescapes metadata property names](../core/compatibility/serialization/9.0/json-metadata-reader.md)
-- [System.Windows.Forms.StatusStrip uses a different default renderer](../core/compatibility/windows-forms/9.0/statusstrip-renderer.md)
-- [System.Windows.Forms.StatusStrip uses System RenderMode by default](../core/compatibility/windows-forms/10.0/statusstrip-renderer.md)
-
-### Updated articles
-
-- [Breaking changes in .NET 7](../core/compatibility/7.0.md) - .NET 7 breaking changes overview behavioral changes clarity
+- [HTTP warnings promoted to errors in `dotnet package list` and `dotnet package search`](../core/compatibility/sdk/10.0/http-warnings-to-errors.md)
+- [Incorrect usage of DynamicResource causes application crash](../core/compatibility/wpf/10.0/dynamicresource-crash.md)
+- [ProviderAliasAttribute moved to Microsoft.Extensions.Logging.Abstractions](../core/compatibility/extensions/10.0/provideraliasattribute-moved-assembly.md)
+- [Specifying DllImportSearchPath.AssemblyDirectory only searches the assembly directory](../core/compatibility/interop/10.0/search-assembly-directory.md)
 
 ## AI in .NET
 
 ### New articles
 
-- [Evaluate a model's response](../ai/quickstarts/evaluate-ai-response.md)
-- [The Microsoft.Extensions.AI.Evaluation libraries (Preview)](../ai/conceptual/evaluation-libraries.md)
+- [Create a minimal MCP client using .NET](../ai/quickstarts/build-mcp-client.md)
+- [Create and connect to a minimal MCP server using .NET](../ai/quickstarts/build-mcp-server.md)
+- [Get started with .NET AI and the Model Context Protocol](../ai/get-started-mcp.md)
+- [Microsoft.Extensions.AI libraries](../ai/microsoft-extensions-ai.md)
+- [Request a response with structured output](../ai/quickstarts/structured-output.md)
+- [Tutorial: Evaluate response safety with caching and reporting](../ai/tutorials/evaluate-safety.md)
 
 ## .NET fundamentals
 
 ### New articles
 
-- [Install and use LLDB on Linux](../core/diagnostics/lldb-linux.md)
-- [MSTEST0041: Use 'ConditionBaseAttribute' on test classes](../core/testing/mstest-analyzers/mstest0041.md)
-- [What's new in .NET 10](../core/whats-new/dotnet-10/overview.md)
-- [What's new in .NET libraries for .NET 10](../core/whats-new/dotnet-10/libraries.md)
-- [What's new in the .NET 10 runtime](../core/whats-new/dotnet-10/runtime.md)
-- [What's new in the SDK and tooling for .NET 10](../core/whats-new/dotnet-10/sdk.md)
+- [GitHub Copilot app modernization - upgrade for .NET FAQ](../core/porting/github-copilot-app-modernization-faq.yml)
+- [Install GitHub Copilot app modernization - upgrade for .NET](../core/porting/github-copilot-app-modernization-install.md)
+- [What is GitHub Copilot app modernization - upgrade for .NET?](../core/porting/github-copilot-app-modernization-overview.md)
+- [Log buffering in .NET](../core/extensions/log-buffering.md)
+- [Log sampling in .NET](../core/extensions/log-sampling.md)
+- [Implement with Copilot (IDE3000)](../fundamentals/code-analysis/style-rules/ide3000.md)
+- [.NET runtime wait handle events](../fundamentals/diagnostics/runtime-wait-handle-events.md)
 
 ### Updated articles
 
-- [C# formatting options](../fundamentals/code-analysis/style-rules/csharp-formatting-options.md) - Add default value for csharp_space_between_parentheses
-- [Configure MSTest](../core/testing/unit-testing-mstest-configure.md) - Improve MSTest testconfig doc
-- [dotnet test](../core/tools/dotnet-test.md) - Add documentation to the new dotnet test
-- [How to perform streaming transform of large XML documents (LINQ to XML)](../standard/linq/perform-streaming-transform-large-xml-documents.md) - Fixed incorrect logic in another XmlReader's example
-- [How to stream XML fragments with access to header information (LINQ to XML)](../standard/linq/stream-xml-fragments-access-header-information.md) - Fixed incorrect logic in another XmlReader's example
+- [Debug ThreadPool starvation](../core/diagnostics/debug-threadpool-starvation.md) - Add dotnet-trace to Debug ThreadPool Starvation
+- [What's new in .NET libraries for .NET 10](../core/whats-new/dotnet-10/libraries.md) - What's new in Preview 4
+- [What's new in the .NET 10 runtime](../core/whats-new/dotnet-10/runtime.md) - What's new in Preview 4
 
 ## C# language
 
 ### New articles
 
-- [What's new in C# 14](../csharp/whats-new/csharp-14.md)
-
-### Updated articles
-
-- [Resolve nullable warnings](../csharp/language-reference/compiler-messages/nullable-warnings.md) - Add additional nullable reference warnings and errors
-
-## Azure SDK for .NET
-
-### New articles
-
-- [Authenticate Azure-hosted .NET apps to Azure resources using a user-assigned managed identity](../azure/sdk/authentication/user-assigned-managed-identity.md)
-
-## .NET Framework
-
-### New articles
-
-- [Install .NET Framework on Windows and Windows Server](../framework/install/on-windows-and-server.md)
-- [January 2025 cumulative update preview](../framework/release-notes/2025/01-28-january-cumulative-update-preview.md)
+- [Compiler Error CS9036](../csharp/language-reference/compiler-messages/cs9036.md)
+- [Errors and warnings for string literal declarations](../csharp/language-reference/compiler-messages/string-literal.md)
+- [Errors and warnings related to extension methods declared with `this` parameters or `extension` blocks](../csharp/language-reference/compiler-messages/extension-declarations.md)
+- [Match data against patterns](../csharp/tour-of-csharp/tutorials/pattern-matching.md)
 
 ## Community contributors
 
 The following people contributed to the .NET docs during this period. Thank you! Learn how to contribute by following the links under "Get involved" in the [what's new landing page](index.yml).
 
-- [Rageking8](https://github.com/Rageking8) -  ![4 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-4-green)
-- [Knar33](https://github.com/Knar33) - Knar ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [BartoszKlonowski](https://github.com/BartoszKlonowski) - Bartosz Klonowski ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [BenjaminMichaelis](https://github.com/BenjaminMichaelis) - Benjamin Michaelis ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [cacamille3](https://github.com/cacamille3) - Camille Guérin ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [egil](https://github.com/egil) - Egil Hansen ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [i2van](https://github.com/i2van) - Ivan Ivon ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [james-crawshaw](https://github.com/james-crawshaw) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [JoonghyunCho](https://github.com/JoonghyunCho) - Jay Cho ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [jwreford99](https://github.com/jwreford99) - Julian Wreford ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [kendra-svg](https://github.com/kendra-svg) - Kendra Sancho Vega ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [maartenba](https://github.com/maartenba) - Maarten Balliauw ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [michelebastione](https://github.com/michelebastione) - Michele Bastione ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [mpolewaczyk](https://github.com/mpolewaczyk) - Mateusz Polewaczyk ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [newmancodes](https://github.com/newmancodes) - Stephen Newman ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [RadwanAlfakseh](https://github.com/RadwanAlfakseh) - Radwan Nabeel Alfakseh ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [selaskar](https://github.com/selaskar) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [ShaoHans](https://github.com/ShaoHans) - ShaoHans ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [sonergonul](https://github.com/sonergonul) - Soner Gönül ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [theluckyprogrammer](https://github.com/theluckyprogrammer) - Tomasz Osmanowski ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [thomasclaudiushuber](https://github.com/thomasclaudiushuber) - Thomas Claudius Huber ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [tsahi](https://github.com/tsahi) - tsahi ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [BartoszKlonowski](https://github.com/BartoszKlonowski) - Bartosz Klonowski ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
+- [copilot-swe-agent](https://github.com/copilot-swe-agent) -  ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
+- [Rageking8](https://github.com/Rageking8) -  ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
+- [verdie-g](https://github.com/verdie-g) - Grégoire ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
+- [AKapeniak](https://github.com/AKapeniak) - Andy Kapeniak ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [bdukes](https://github.com/bdukes) - Brian Dukes ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [Bouke](https://github.com/Bouke) - Bouke Haarsma ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [calebspain](https://github.com/calebspain) - Caleb Spain ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [felisevan](https://github.com/felisevan) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [gayuvick](https://github.com/gayuvick) - Gayu ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [Happypig375](https://github.com/Happypig375) - Hadrian Tang ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [ieviev](https://github.com/ieviev) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [KnapSac](https://github.com/KnapSac) - Casper Verhaar ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [LeMinh22621](https://github.com/LeMinh22621) - Lê Hồng Minh ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [lubugit](https://github.com/lubugit) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [mbeirouti](https://github.com/mbeirouti) - Matthew Beirouti ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [MBSadeghzadeh](https://github.com/MBSadeghzadeh) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [neel-middleware](https://github.com/neel-middleware) - Neel Shah ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)

docs/whats-new/index.yml

@@ -5,7 +5,7 @@ summary: Welcome to what's new in .NET and .NET docs. Use this page to navigate
 metadata:
   title: .NET what's new?
   description: Learn about new .NET features and new and updated content in .NET docs.
-  ms.date: 05/01/2025
+  ms.date: 06/01/2025
   ms.topic: landing-page
 landingContent:
 - title: .NET 10 release updates
@@ -40,12 +40,12 @@ landingContent:
   linkLists:
   - linkListType: whats-new
     links:
+    - text: May 2025
+      url: dotnet-docs-mod2.md
     - text: April 2025
       url: dotnet-docs-mod1.md
     - text: March 2025
       url: dotnet-docs-mod0.md
-    - text: February 2025
-      url: dotnet-docs-mod2.md
 - title: Language updates
   linkLists:
   - linkListType: whats-new

docs/whats-new/toc.yml

@@ -6,12 +6,12 @@ items:
   - name: Latest documentation updates
     expanded: true
     items:
+    - name: May 2025
+      href: dotnet-docs-mod2.md
     - name: April 2025
       href: dotnet-docs-mod1.md
     - name: March 2025
       href: dotnet-docs-mod0.md
-    - name: February 2025
-      href: dotnet-docs-mod2.md
   - name: Product updates
     items:
     - name: .NET 10