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.Download .NET 11 Preview 6This release contains the following improvements.LibrariesStream adapters for memory and textAsynchronous validation with DataAnnotationsSystem.Text.Json serializes C# union typesConfigure Activity tracing with rulesCross-lane operations for vectorsStart processes suspended and look them up by idSee all library updatesRuntimeRuntime-async performance improvementsJIT improvementsIn-process crash report loggingNativeAOT: faster interface dispatchSIMD: Lane construction and composition APIsSee all runtime updates SDKNativeAOT CLI serves the full command surfacedotnet test gains new options and improved outputTest templates support xUnit v3 and NUnit on Microsoft.Testing.PlatformFile-based apps support #:include .dll referencesContainer publishing supports multi-arch builds with PodmanTypeScript outputs integrate with Static Web AssetsCLI honors MSBuild server and standard OpenTelemetry env varsSee all SDK updatesC#Extension indexersUnions ship their support types in the boxSee all C# updates ASP.NET CoreAsync validation for minimal APIsAutomatic cross-origin (CSRF) protectionBlazor Virtualize can scroll to an itemOpenAPI 3.2 by defaultUnions in ASP.NET CoreShort-circuit endpoints with an attributeSignalR authentication refreshCancel hub invocations from the clientdotnet user-jwts supports file-based appsSee all ASP.NET Core updates .NET MAUICollectionView2 comes to WindowsHandler-based Shell architecture on AndroidMicrosoft.Maui.Controls.Compatibility package removedHybridWebView is now AOT-safeGeolocation gains a minimum-distance filterAndroid MediaPicker result recovery.NET for AndroidApple platforms (.NET for iOS, Mac Catalyst, macOS, tvOS)See all .NET MAUI updates Entity Framework CoreLINQ query translation improvementsKeys and indexes traverse complex-type propertiesUnconstrained foreign key relationshipsAzure Cosmos DB provider improvementsMigrations improvementsMicrosoft.Data.Sqlite now depends on SQLite3MC.PCLRaw.bundleSee all EF Core updatesF#Array.init can inline initialization lambdasInterpolated strings parse next to equals signsFSI –quiet keeps restore output off stdoutSignature-file diagnostics catch missing semantic attributesDebug sequence points cover more F# expressionsSee all F# updates Container ImagesAzure Linux 4.0 imagesSmaller Native AOT SDK imagesSee 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.The post .NET 11 Preview 6 is now available! appeared first on .NET Blog.