What's new article (#44120)

* Bot 🤖 generated "What's new article"

* Fix markdown lint issue

* Update docs/whats-new/dotnet-docs-mod0.md

---------

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

Author: 3 people

docs/whats-new/dotnet-docs-mod0.md

@@ -1,88 +1,90 @@
 ---
-title: ".NET docs: What's new for September 2024"
-description: "What's new in the .NET docs for September 2024."
-ms.custom: September-2024
-ms.date: 10/01/2024
+title: ".NET docs: What's new for December 2024"
+description: "What's new in the .NET docs for December 2024."
+ms.custom: December-2024
+ms.date: 01/01/2025
 ---
 
-# .NET docs: What's new for September 2024
+# .NET docs: What's new for December 2024
 
-Welcome to what's new in the .NET docs for September 2024. This article lists some of the major changes to docs during this period.
+Welcome to what's new in the .NET docs for December 2024. This article lists some of the major changes to docs during this period.
 
 ## .NET breaking changes
 
 ### New articles
 
-- [Floating point-to-integer conversions are saturating](../core/compatibility/jit/9.0/fp-to-integer.md)
-- [FromKeyedServicesAttribute no longer injects non-keyed parameter](../core/compatibility/core-libraries/9.0/non-keyed-params.md)
-- [HttpClientFactory logging redacts header values by default](../core/compatibility/networking/9.0/redact-headers.md)
-- [IMsoComponent support is opt-in](../core/compatibility/windows-forms/9.0/imsocomponent-support.md)
-- [IncrementingPollingCounter initial callback is asynchronous](../core/compatibility/core-libraries/9.0/async-callback.md)
-- [ZipArchiveEntry names and comments respect UTF8 flag](../core/compatibility/core-libraries/9.0/ziparchiveentry-encoding.md)
+- [.NET Monitor images simplified to version-only tags](../core/compatibility/containers/9.0/monitor-images.md)
+- [C# overload resolution prefers `params` span-type overloads](../core/compatibility/core-libraries/9.0/params-overloads.md)
+- [Legacy Mono and Emscripten JavaScript APIs not exported to global namespace](../core/compatibility/aspnet-core/9.0/legacy-apis.md)
+- [New version of some OOB packages](../core/compatibility/core-libraries/9.0/oob-packages.md)
+- [Nullable JsonDocument properties deserialize to JsonValueKind.Null](../core/compatibility/serialization/9.0/jsondocument-props.md)
+- [System.Windows.Forms.StatusStrip uses a different default renderer](../core/compatibility/windows-forms/9.0/statusstrip-renderer.md)
 
 ## .NET fundamentals
 
 ### New articles
 
-- [Common `IHttpClientFactory` usage issues](../core/extensions/httpclient-factory-troubleshooting.md)
-- [HttpWebRequest to HttpClient Migration Guide](../fundamentals/networking/http/httpclient-migrate-from-httpwebrequest.md)
-- [Intrinsic APIs marked RequiresDynamicCode](../core/deploying/native-aot/intrinsic-requiresdynamiccode-apis.md)
-- [Security features](../core/deploying/native-aot/security.md)
+- [.NET debugger extensions](../core/diagnostics/debugger-extensions.md)
+- [.NET debugger extensions installer (dotnet-debugger-extensions)](../core/diagnostics/dotnet-debugger-extensions.md)
+- [Artificial intelligence in .NET (Preview)](../core/extensions/artificial-intelligence.md)
+- [Built-in activities in .NET](../core/diagnostics/distributed-tracing-builtin-activities.md)
+- [IL2123: `RequiresUnreferencedCodeAttribute` cannot be placed directly on application entry point](../core/deploying/trimming/trim-warnings/il2123.md)
+- [IL3005: `RequiresAssemblyFilesAttribute` cannot be placed directly on application entry point](../core/deploying/single-file/warnings/il3005.md)
+- [IL3057: `RequiresDynamicCodeAttribute` cannot be placed directly on application entry point](../core/deploying/native-aot/warnings/il3057.md)
+- [The `TestContext` class](../core/testing/unit-testing-mstest-writing-tests-testcontext.md)
+- [What is TimeProvider?](../standard/datetime/timeprovider-overview.md)
 
 ### Updated articles
 
-- [How to customize property names and values with System.Text.Json](../standard/serialization/system-text-json/customize-properties.md) - Add Copilot use case
-- [How to write .NET objects as JSON (serialize)](../standard/serialization/system-text-json/how-to.md) - Add GitHub Copilot use case to serialize JSON
-- [MSBuild reference for .NET SDK projects](../core/project-sdk/msbuild-props.md) - Add MSBuild test-related properties
-- [What's new in .NET libraries for .NET 9](../core/whats-new/dotnet-9/libraries.md) - What's new for .NET 9 RC 1
+- [Configure MSTest](../core/testing/unit-testing-mstest-configure.md) - MSTest: document testconfig.json
+- [How to stream XML fragments from an XmlReader (LINQ to XML)](../standard/linq/stream-xml-fragments-xmlreader.md) - Fixed incorrect logic in XmlReader's example (#43799)
+- [Supported types in System.Text.Json](../standard/serialization/system-text-json/supported-types.md) - Add supported types for STJ article
 
 ## C# language
 
 ### New articles
 
-- [Resolve errors and warnings that affect overload resolution.](../csharp/language-reference/compiler-messages/overload-resolution.md)
+- [Deconstruction expression - Extract properties of fields from a tuple or other user-defined type](../csharp/language-reference/operators/deconstruction.md)
+- [Discard - A `_` acts as a placeholder for a variable](../csharp/language-reference/tokens/discard.md)
 
-## Azure SDK for .NET
+## F# language
 
-### New articles
+### Updated articles
 
-- [Frequently asked questions](../azure/migration/appcat/faq.md)
+- [Attributes (F#)](../fsharp/language-reference/attributes.md) - F# 9 doc updates
 
-## .NET Framework
+## AI in .NET
+
+### Updated articles
+
+- [Build a .NET AI vector search app](../ai/quickstarts/quickstart-ai-chat-with-data.md) - New vector search quickstart
+
+## ML.NET
 
 ### Updated articles
 
-- [Migrating WSE 3.0 Web Services to WCF](../framework/wcf/feature-details/migrating-wse-3-0-web-services-to-wcf.md) - SFI: ROPC - another chunk
+- [Machine learning tasks in ML.NET](../machine-learning/resources/tasks.md) - Add text classification and sentence similarity to ML tasks
+
+## .NET Framework
+
+### New articles
+
+- [Install .NET Framework on Windows Server 2025](../framework/install/on-server-2025.md)
+- [November 2024 cumulative update preview](../framework/release-notes/2024/11-21-november-preview-cumulative-update.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).
 
-- [BartoszKlonowski](https://github.com/BartoszKlonowski) - Bartosz Klonowski ![3 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-3-green)
-- [hakenr](https://github.com/hakenr) - Robert Haken ![3 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-3-green)
-- [mpostol](https://github.com/mpostol) - Mariusz Postol ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [Roshni-Gandhi](https://github.com/Roshni-Gandhi) -  ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [AptiviCEO](https://github.com/AptiviCEO) - Aptivi CEO ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [bb-froggy](https://github.com/bb-froggy) - Christoph Hannebauer ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- bravequickcleverfibreyarn - boldswiftsmartfiberhank ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [ChinoUkaegbu](https://github.com/ChinoUkaegbu) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [colejohnson66](https://github.com/colejohnson66) - Cole Tobin ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [da1910](https://github.com/da1910) - Doug Addy ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [geniuszxy](https://github.com/geniuszxy) - Shingo ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [Haidar0096](https://github.com/Haidar0096) - Haidar Mehsen ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [HEJOK254](https://github.com/HEJOK254) - Jakub Dębski ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [jairbubbles](https://github.com/jairbubbles) - Julien Richard ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [koenigst](https://github.com/koenigst) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [Legend4it](https://github.com/Legend4it) - Ali Abdulhussein ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [luizfls](https://github.com/luizfls) - Luiz Felipe Silva ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [melbasiouny](https://github.com/melbasiouny) - Mostafa ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [normandev92](https://github.com/normandev92) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [ousiax](https://github.com/ousiax) - Jon X ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [sammychinedu2ky](https://github.com/sammychinedu2ky) - Samson Amaugo ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [samwherever](https://github.com/samwherever) - Sam Allen ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [Smaug123](https://github.com/Smaug123) - Patrick Stevens ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [stashut](https://github.com/stashut) - Stanislav Hut ![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)
+- [DaRosenberg](https://github.com/DaRosenberg) - Daniel Rosenberg ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [DonCorleone](https://github.com/DonCorleone) - Linus Wieland ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [inwenis](https://github.com/inwenis) - fku-incom ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [jkone27](https://github.com/jkone27) - gparmigiani ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [Nothing-Works](https://github.com/Nothing-Works) - Andy ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [oksanatk](https://github.com/oksanatk) - Oksana Tkach ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [Rageking8](https://github.com/Rageking8) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [RaphaelSantiago53](https://github.com/RaphaelSantiago53) - Raphael ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [stamminator](https://github.com/stamminator) - Jacob Stamm ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
 - [timdeschryver](https://github.com/timdeschryver) - Tim Deschryver ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [udidahan](https://github.com/udidahan) - Udi Dahan ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [xlxdxy](https://github.com/xlxdxy) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [xparadoxical](https://github.com/xparadoxical) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [tmds](https://github.com/tmds) - Tom Deseyn ![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: 12/12/2024
+  ms.date: 01/01/2025
   ms.topic: landing-page
 landingContent:
 - title: .NET 9 release updates
@@ -40,12 +40,12 @@ landingContent:
   linkLists:
   - linkListType: whats-new
     links:
+    - text: December 2024
+      url: dotnet-docs-mod0.md
     - text: November 2024
       url: dotnet-docs-mod2.md
     - text: October 2024
       url: dotnet-docs-mod1.md
-    - text: September 2024
-      url: dotnet-docs-mod0.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: December 2024
+      href: dotnet-docs-mod0.md
     - name: November 2024
       href: dotnet-docs-mod2.md
     - name: October 2024
       href: dotnet-docs-mod1.md
-    - name: September 2024
-      href: dotnet-docs-mod0.md
   - name: Product updates
     items:
     - name: .NET 9