Today, we are excited to announce the sixth preview release of .NET 11! This release includes improvements across the .NET Runtime, SDK, libraries, ASP.NET Core, .NET MAUI, C#, Entity Framework Core, F#, and container images. Check out the linked release notes below and get started today.[cta-button align="center" text="Download .NET 11 Preview 6" url="https://dotnet.microsoft.com/download/dotnet/11.0" color="#5C2D91"]This release contains the following improvements.📚Libraries Stream adapters for memory and text Asynchronous validation with DataAnnotations System.Text.Json serializes C# union types Configure Activity tracing with rules Cross-lane operations for vectors Start processes suspended and look them up by id See all library updates⏱️Runtime Runtime-async performance improvements JIT improvements In-process crash report logging NativeAOT: faster interface dispatch SIMD: Lane construction and composition APIs See all runtime updates🛠️ SDK NativeAOT CLI serves the full command surface dotnet test gains new options and improved output Test templates support xUnit v3 and NUnit on Microsoft.Testing.Platform File-based apps support #:include .dll references Container publishing supports multi-arch builds with Podman TypeScript outputs integrate with Static Web Assets CLI honors MSBuild server and standard OpenTelemetry env vars See all SDK updatesC# Extension indexers Unions ship their support types in the box See all C# updates🌐 ASP.NET Core Async validation for minimal APIs Automatic cross-origin (CSRF) protection Blazor Virtualize can scroll to an item OpenAPI 3.2 by default Unions in ASP.NET Core Short-circuit endpoints with an attribute SignalR authentication refresh Cancel hub invocations from the client dotnet user-jwts supports file-based apps See all ASP.NET Core updates📱 .NET MAUI CollectionView2 comes to Windows Handler-based Shell architecture on Android Microsoft.Maui.Controls.Compatibility package removed HybridWebView is now AOT-safe Geolocation gains a minimum-distance filter Android MediaPicker result recovery .NET for Android Apple platforms (.NET for iOS, Mac Catalyst, macOS, tvOS) See all .NET MAUI updates🎁 Entity Framework Core LINQ query translation improvements Keys and indexes traverse complex-type properties Unconstrained foreign key relationships Azure Cosmos DB provider improvements Migrations improvements Microsoft.Data.Sqlite now depends on SQLite3MC.PCLRaw.bundle See all EF Core updatesF# Array.init can inline initialization lambdas Interpolated strings parse next to equals signs FSI --quiet keeps restore output off stdout Signature-file diagnostics catch missing semantic attributes Debug sequence points cover more F# expressions See all F# updates📦 Container Images Azure Linux 4.0 images Smaller Native AOT SDK images See all container image updates🚀 Get startedTo 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.