Today, we are excited to announce the second preview release of .NET 11! This release includes improvements across the .NET Runtime, SDK, libraries, ASP.NET Core, Blazor, .NET MAUI, F#, Entity Framework Core, container images, and more. Check out the full release notes linked below and get started today.
This release contains the following improvements.
Libraries
- Generic
GetTypeInfoforSystem.Text.Json - Tar archive format selection
Matrix4x4.GetDeterminant~15% faster- Full Release Notes
Runtime
- Runtime Async (V2)
- JIT improvements
- Cached interface dispatch and other VM improvements
- Full Release Notes
SDK
- Smaller SDK installers on Linux and macOS
- Code analyzer improvements
- New SDK warnings and build targets
- Full Release Notes
C#
.NET 11 Preview 2 doesn’t include any notable new C# language features or breaking changes. Browse the What’s new in C# documentation for details.
F#
- Simplified DIM interface hierarchies
- Overload resolution caching
#elifpreprocessor directivepartitionWithfor collections- Full Release Notes
Visual Basic
.NET 11 Preview 2 doesn’t include any notable new Visual Basic language features or breaking changes. Browse the What’s new in Visual Basic documentation for details.
ASP.NET Core & Blazor
- Native OpenTelemetry tracing for ASP.NET Core
- TempData support for Blazor
- OpenAPI 3.2.0 support
- .NET Web Worker project template
- Performance improvements
- Full Release Notes
.NET MAUI
- Map control improvements
- TypedBinding performance improvements
- Immutability annotations for
ColorandFont - VisualStateManager API consistency
.NET for Android
- Fixes and improvements to
dotnet run - Use response files when calling
r8.jar - CoreCLR now requires API 24 and higher
Browse the full release notes for all of this and more, including experimental CoreCLR support for .NET for iOS, Mac Catalyst, macOS, and tvOS.
Windows Forms
.NET 11 Preview 2 doesn’t include any notable new Windows Forms features or breaking changes. Browse the What’s new in Windows Forms documentation for details.
Windows Presentation Foundation (WPF)
This release focused on quality improvements, including a fix to guard against crashes caused by Desktop Window Manager (DWM) failures. A full list of changes can be found in the release notes.
Entity Framework Core
- Support for LINQ
MaxByandMinBy - Support for SQL Server DiskANN vector indexes and
VECTOR_SEARCH() - Support for creating SQL Server full-text catalogs and indexes
- Support for SQL Server
JSON_CONTAINS() - Full Release Notes
Container Images
Get started
To get started with .NET 11, install the .NET 11 SDK.
If you’re on Windows using Visual Studio, we recommend installing the latest Visual Studio 2026 Insiders. You can also use Visual Studio Code and the C# Dev Kit extension with .NET 11.
The post .NET 11 Preview 2 is now available! appeared first on .NET Blog.
SDK
ASP.NET Core & Blazor
.NET MAUI
Windows Forms
Entity Framework Core
Container Images
Get started