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 GetTypeInfo for System.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
• #elif preprocessor directive
• partitionWith for 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 Color and Font
• 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 MaxBy and MinBy
• 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

• SDK container images are up to 17% smaller
• Full Release Notes

🚀 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.