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Co-authored-by: Genevieve Warren <24882762+gewarren@users.noreply.github.com>

---------

Co-authored-by: IEvangelist <7679720+IEvangelist@users.noreply.github.com>
Co-authored-by: Bill Wagner <wiwagn@microsoft.com>
Co-authored-by: Genevieve Warren <24882762+gewarren@users.noreply.github.com>

Author: 4 people

docs/whats-new/dotnet-docs-mod1.md

@@ -1,108 +1,123 @@
 ---
-title: ".NET docs: What's new for October 2024"
-description: "What's new in the .NET docs for October 2024."
-ms.custom: October-2024
-ms.date: 11/01/2024
+title: ".NET docs: What's new for January 2025"
+description: "What's new in the .NET docs for January 2025."
+ms.custom: January-2025
+ms.date: 02/01/2025
 ---
 
-# .NET docs: What's new for October 2024
+# .NET docs: What's new for January 2025
 
-Welcome to what's new in the .NET docs for October 2024. This article lists some of the major changes to docs during this period.
+Welcome to what's new in the .NET docs for January 2025. This article lists some of the major changes to docs during this period.
 
 ## .NET breaking changes
 
 ### New articles
 
-- [BinaryReader.GetString() returns \uFFFD on malformed sequences](../core/compatibility/core-libraries/9.0/binaryreader.md)
-- [CET supported by default](../core/compatibility/interop/9.0/cet-support.md)
-- [EnumConverter validates registered types to be enum](../core/compatibility/core-libraries/9.0/enumconverter.md)
-- [New security analyzers](../core/compatibility/windows-forms/9.0/security-analyzers.md)
-- [New TimeSpan.From*() overloads that take integers](../core/compatibility/core-libraries/9.0/timespan-from-overloads.md)
-- [Some SVE APIs removed](../core/compatibility/jit/9.0/sve-apis.md)
-- [User info in `mailto:` URIs is compared](../core/compatibility/networking/8.0/uri-comparison.md)
-- [Windows private key lifetime simplified](../core/compatibility/cryptography/9.0/private-key-lifetime.md)
+- [`dotnet sln add` no longer allows invalid file names](../core/compatibility/sdk/9.0/dotnet-sln.md)
+- [ActivitySource.CreateActivity and ActivitySource.StartActivity behavior change](../core/compatibility/core-libraries/10.0/activity-sampling.md)
+- [API obsoletions with non-default diagnostic IDs (.NET 10)](../core/compatibility/core-libraries/10.0/obsolete-apis.md)
+- [Breaking changes in .NET 10](../core/compatibility/10.0.md)
+- [C# 14 overload resolution with span parameters](../core/compatibility/core-libraries/10.0/csharp-overload-resolution.md)
+- [Consistent shift behavior in generic math](../core/compatibility/core-libraries/10.0/generic-math.md)
+- [Default RID used when targeting .NET Framework](../core/compatibility/sdk/9.0/default-rid.md)
+- [Environment variable renamed to DOTNET_ICU_VERSION_OVERRIDE](../core/compatibility/globalization/10.0/version-override.md)
+- [LDAP DirectoryControl parsing is now more stringent](../core/compatibility/core-libraries/10.0/ldap-directorycontrol-parsing.md)
+- [MacCatalyst version normalization](../core/compatibility/core-libraries/10.0/maccatalyst-version-normalization.md)
+- [Renamed parameter in HtmlElement.InsertAdjacentElement](../core/compatibility/windows-forms/10.0/insertadjacentelement-orientation.md)
+- [TreeView checkbox image truncation](../core/compatibility/windows-forms/10.0/treeview-text-location.md)
+- [X500DistinguishedName validation is stricter](../core/compatibility/cryptography/10.0/x500distinguishedname-validation.md)
 
 ## .NET fundamentals
 
 ### New articles
 
-- [Analyze projects with .NET Upgrade Assistant](../core/porting/upgrade-assistant-how-to-analyze.md)
-- [CA2022: Avoid inexact read with Stream.Read](../fundamentals/code-analysis/quality-rules/ca2022.md)
-- [CA2265: Do not compare `Span<T>` to `null` or `default`](../fundamentals/code-analysis/quality-rules/ca2265.md)
-- [Configuration source generator](../core/extensions/configuration-generator.md)
-- [Experimental features in .NET 9+](../fundamentals/syslib-diagnostics/experimental-overview.md)
-- [Intrinsic APIs marked RequiresUnreferencedCode](../core/deploying/trimming/intrinsic-requiresunreferencedcode-apis.md)
-- [Microsoft.Testing.Platform architecture](../core/testing/unit-testing-platform-architecture.md)
-- [Microsoft.Testing.Platform capabilities](../core/testing/unit-testing-platform-architecture-capabilities.md)
-- [Microsoft.Testing.Platform extensibility](../core/testing/unit-testing-platform-architecture-extensions.md)
-- [Microsoft.Testing.Platform Services](../core/testing/unit-testing-platform-architecture-services.md)
-- [Native interoperability ABI support](../standard/native-interop/abi-support.md)
-- [Respect nullable annotations](../standard/serialization/system-text-json/nullable-annotations.md)
-- [SYSLIB1230: Deriving from a `GeneratedComInterface`-attributed interface defined in another assembly is not supported](../fundamentals/syslib-diagnostics/syslib1230.md)
-- [Upgrade projects with .NET Upgrade Assistant](../core/porting/upgrade-assistant-how-to-upgrade.md)
-- [What is code analysis with .NET Upgrade Assistant?](../core/porting/upgrade-assistant-analyze-overview.md)
-- [Extract schema](../standard/serialization/system-text-json/extract-schema.md)
+- [.NET SDK container creation overview](../core/containers/overview.md)
+- [CA2024: Do not use StreamReader.EndOfStream in async methods](../fundamentals/code-analysis/quality-rules/ca2024.md)
+- [Containerize a .NET app with dotnet publish](../core/containers/sdk-publish.md)
+- [Distributed tracing in System.Net libraries](../fundamentals/networking/telemetry/tracing.md)
+- [Keyed DI support in `IHttpClientFactory`](../core/extensions/httpclient-factory-keyed-di.md)
+- [MSTEST0038: Don't use 'Assert.AreSame' or 'Assert.AreNotSame' with value types](../core/testing/mstest-analyzers/mstest0038.md)
+- [MSTEST0039: Use newer 'Assert.Throws' methods](../core/testing/mstest-analyzers/mstest0039.md)
+- [MSTEST0040: Do not assert inside 'async void' contexts](../core/testing/mstest-analyzers/mstest0040.md)
+- [NETSDK1032: RuntimeIdentifier and PlatformTarget must be compatible](../core/tools/sdk-errors/netsdk1032.md)
+- [NETSDK1144: Optimizing assemblies for size failed](../core/tools/sdk-errors/netsdk1144.md)
+- [Preview APIs](../fundamentals/runtime-libraries/preview-apis.md)
+- [QUIC configuration options](../fundamentals/networking/quic/quic-options.md)
+- [Serialization extension methods on HttpClient](../standard/serialization/system-text-json/httpclient-extensions.md)
+- [SYSLIB0058: Certain SslStream properties are obsolete](../fundamentals/syslib-diagnostics/syslib0058.md)
+- [SYSLIB0059: SystemEvents.EventsThreadShutdown callbacks aren't run before the process exits](../fundamentals/syslib-diagnostics/syslib0059.md)
+- [SYSLIB0060: Rfc2898DeriveBytes constructors are obsolete](../fundamentals/syslib-diagnostics/syslib0060.md)
 
 ### Updated articles
 
-- [HttpWebRequest to HttpClient migration guide](../fundamentals/networking/http/httpclient-migrate-from-httpwebrequest.md) - Fix build suggestions
-- [Install .NET on macOS](../core/install/macos.md) - Rewrite install on macOS article
+- [Creating metrics](../core/diagnostics/metrics-instrumentation.md) - [diagnostics] Add InstrumentAdvice details to instrumentation doc
+- [dotnet-coverage code coverage utility](../core/additional-tools/dotnet-coverage.md) - Update dotnet-coverage docs. Adding uninstrument command
+- [Microsoft.Testing.Platform and VSTest comparison](../core/testing/unit-testing-platform-vs-vstest.md) - Add first level info for migration off of VSTest
+- [Tutorial: Containerize a .NET app](../core/docker/build-container.md) - Address issues related to .NET containers
+
+## C# language
+
+### New articles
+
+- [Custom attributes that generate flags or options in the Intermediate Language (IL) output](../csharp/language-reference/attributes/pseudo-attributes.md)
+
+## Visual Basic language
+
+### Updated articles
+
+- [Generic types in Visual Basic (Visual Basic)](../visual-basic/programming-guide/language-features/data-types/generic-types.md) - Add VB new features
+
+## AI in .NET
+
+### New articles
+
+- [Create a minimal AI assistant using .NET](../ai/quickstarts/quickstart-assistants.md)
 
 ## Azure SDK for .NET
 
 ### New articles
 
-- [Use Copilot Conversational Assessment with the Azure Migrate application and code assessment tool.](../azure/migration/appcat/visual-studio-copilot.md)
+- [Authentication best practices with the Azure Identity library for .NET](../azure/sdk/authentication/best-practices.md)
+
+## Microsoft Orleans
+
+### New articles
+
+- [Grain directory implementation](../orleans/implementation/grain-directory.md)
+
+### Updated articles
+
+- [Background Services and Startup Tasks](../orleans/host/configuration-guide/startup-tasks.md) - [Orleans] Update startup tasks guidance
+- [Cluster management in Orleans](../orleans/implementation/cluster-management.md) - [Orleans] Update clustering implementation docs
 
 ## .NET Framework
 
 ### New articles
 
-- [February 2024 security and quality rollup](../framework/release-notes/2024/02-14-february-security-and-quality-rollup.md)
-- [January 2024 cumulative update preview](../framework/release-notes/2024/01-23-january-preview-cumulative-update.md)
-- [January 2024 security and quality rollup](../framework/release-notes/2024/01-09-january-security-and-quality-rollup.md)
-- [March 2024 cumulative update preview](../framework/release-notes/2024/03-26-march-preview-cumulative-update.md)
-- [October 2024 cumulative update preview](../framework/release-notes/2024/10-22-october-preview-cumulative-update.md)
-- [October 2024 security and quality rollup](../framework/release-notes/2024/10-08-october-security-and-quality-rollup.md)
+- [.NET Framework release notes](../framework/release-notes/release-notes.md)
+- [January 2025 cumulative update](../framework/release-notes/2025/01-14-january-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).
 
-- [shethaadit](https://github.com/shethaadit) - Adit Sheth ![3 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-3-green)
-- [BartoszKlonowski](https://github.com/BartoszKlonowski) - Bartosz Klonowski ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [bigboybamo](https://github.com/bigboybamo) - Olabamiji Oyetubo ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [juner](https://github.com/juner) - juner ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [Marusyk](https://github.com/Marusyk) - Roman Marusyk ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [timdeschryver](https://github.com/timdeschryver) - Tim Deschryver ![2 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-2-green)
-- [aarijimam](https://github.com/aarijimam) - Nawab Aarij Imam ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [alexravenna](https://github.com/alexravenna) - Alex Ravenna ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [am11](https://github.com/am11) - Adeel Mujahid ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [ardalis](https://github.com/ardalis) - Steve Smith ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [azarboon](https://github.com/azarboon) - Mahdi Azarboon ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [batkaevruslan](https://github.com/batkaevruslan) - Ruslan Batkaev ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [BigT-88](https://github.com/BigT-88) -  ![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)
-- [fabrizziocht](https://github.com/fabrizziocht) - Fabrizzio Chavez ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [gbamqzkdyg](https://github.com/gbamqzkdyg) - Luca Ma ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [glen-84](https://github.com/glen-84) - Glen ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [hakenr](https://github.com/hakenr) - Robert Haken ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [HugoRoss](https://github.com/HugoRoss) - Christoph Hafner ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [ichensky](https://github.com/ichensky) - Ivan Chensky ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [janus-toendering](https://github.com/janus-toendering) - Janus Tøndering ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [jochenkirstaetter](https://github.com/jochenkirstaetter) - Jochen Kirstätter ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [jsedlak](https://github.com/jsedlak) - John Sedlak ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [magiudev](https://github.com/magiudev) - Miguel Angel Echeverri Quiroz ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [MarGraz](https://github.com/MarGraz) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [Navis304](https://github.com/Navis304) - Robert ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [omajid](https://github.com/omajid) - Omair Majid ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [PawelAdamczuk](https://github.com/PawelAdamczuk) - Paweł Adamczuk ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [pragnya17](https://github.com/pragnya17) - Pragnya ![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)
+- [shethaadit](https://github.com/shethaadit) - Adit Sheth ![17 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-17-green)
+- [BartoszKlonowski](https://github.com/BartoszKlonowski) - Bartosz Klonowski ![7 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-7-green)
+- [azarboon](https://github.com/azarboon) - Mahdi Azarboon ![3 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-3-green)
+- [theluckyprogrammer](https://github.com/theluckyprogrammer) - Tomasz Osmanowski ![3 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-3-green)
+- [mpidash](https://github.com/mpidash) - Mario Pistrich ![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)
+- [frdij](https://github.com/frdij) - Frans van Dijk ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [gregoryagu](https://github.com/gregoryagu) - Greg Gum ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [joproulx](https://github.com/joproulx) - Jonathan ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [K4PS3](https://github.com/K4PS3) - khaled ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [MangelMaxime](https://github.com/MangelMaxime) - Maxime Mangel ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [mguinness](https://github.com/mguinness) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [RandaZraik](https://github.com/RandaZraik) - Randa Zraik ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [rkargMsft](https://github.com/rkargMsft) -  ![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)
-- [Swimburger](https://github.com/Swimburger) - Niels Swimberghe ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [vcrobe](https://github.com/vcrobe) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [WeihanLi](https://github.com/WeihanLi) - Weihan Li ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [xakep139](https://github.com/xakep139) - Nikita Balabaev ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [xtqqczze](https://github.com/xtqqczze) -  ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
-- [Youssef1313](https://github.com/Youssef1313) - Youssef Victor ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [SetTrend](https://github.com/SetTrend) - Axel D. ![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)
+- [wasabii](https://github.com/wasabii) - Jerome Haltom ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [willibrandon](https://github.com/willibrandon) - Brandon Williams ![1 pull requests.](https://img.shields.io/badge/Merged%20Pull%20Requests-1-green)
+- [zacharylayne](https://github.com/zacharylayne) -  ![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: 01/14/2025
+  ms.date: 02/01/2025
   ms.topic: landing-page
 landingContent:
 - title: .NET 9 release updates
@@ -42,12 +42,12 @@ landingContent:
   linkLists:
   - linkListType: whats-new
     links:
+    - text: January 2025
+      url: dotnet-docs-mod1.md
     - text: December 2024
       url: dotnet-docs-mod0.md
     - text: November 2024
       url: dotnet-docs-mod2.md
-    - text: October 2024
-      url: dotnet-docs-mod1.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: January 2025
+      href: dotnet-docs-mod1.md
     - 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: Product updates
     items:
     - name: .NET 9