.NET 11 Release Candidate 1 is now available. This is our first releasecandidate, which comes with ago-live support licenseso you can confidently use this release for your production applications. Thisrelease of .NET 11 is supported in the newVisual Studio 2026 Insiders release alongsideVisual Studio Code with the C# Dev Kit. Check out the full release notes belowand get started today.Download .NET 11 RC1This release contains the following highlights and improvements.LibrariesSignal processes and inspect termination statusExperimental caller-driven TLS sessionsDNS record resolution on LinuxJSON support for new numeric types and binary schemasJSON closed-type polymorphism and union supportAsync options validationConstruct BitArray values from spansReuse compression encoders and decodersTLS channel binding on UnixFaster authenticated encryption on Apple platformsAES Key Wrap supportBreaking changesBug fixesCommunity contributorsFull Release NotesRuntimeIn-process crash reporting on UnixHalf operations use FP16 hardware instructionsFull Release Notes SDKdotnet test improves mobile application testingdotnet test adds run-level controls and result layoutsContainer publishing produces reproducible images and skips redundant uploadsFile-based programs add Native AOT reuse and formatting supportdotnet format limits configuration discovery to included filesAdditional CLI improvementsFull Release Notes MSBuildCreate and extract tar archivesExpose item glob patterns to build toolingFull Release Notes NuGetPack reuses existing project evaluationsVulnerable package updates work with warnings as errorsFull Release NotesC#C# 15 stabilizes unions and other language featuresUnsafe Evolution refinementsFull Release NotesF#Record spreadsRecord constructorsDirect delegate constructionEfficient interpolated stringsReflection-free record and union formattingFull Release Notes ASP.NET CoreSignalR authentication refresh APIs are finalizedSignalR TypeScript client supports authentication refreshBlazor Server circuits update after authentication refreshOpenAPI reflects obsolete APIsSelect an environment for build-time OpenAPINegotiate authentication uses TLS channel bindingFull Release Notes .NET MAUITestingControlsPlatform featuresXAML.NET for AndroidApple platforms (.NET for iOS, Mac Catalyst, macOS, tvOS)Full Release Notes Windows FormsManage kiosk-style experiencesModern visual styles stabilize for RC 1Full Release Notes Get startedTo get started with .NET 11,install the .NET 11 SDK.If you’re on Windows, we recommend installing the latest version ofVisual Studio 2026 Insiders.You can also use Visual Studio Code and theC# Dev Kitextension with .NET 11. Join a .NET community standupJoin us each week and engage with the developers and product managers behind.NET forcommunity standups. .NET 11 DiscussionsThe team has been making release announcements alongside fullrelease noteson thedotnet/core GitHub Discussions. Stay up-to-date with .NET 11You can stay up-to-date with all the features of .NET 11 with:What’s new in .NET 11What’s new in C# 15What’s new in ASP.NET CoreWhat’s new in Entity Framework CoreBreaking Changes in .NET 11.NET 11 ReleasesThe post Announcing .NET 11 Release Candidate 1 appeared first on .NET Blog.