● Covered by 2 sources · 2 reportsMedium impact2 neutral
.NET 11 Release Candidate 2 is Available with Go-Live Support
Key points
- .NET 11 RC2 released with go-live support
- Includes updates for libraries, runtime, SDK, F#
- Features improvements for ASP.NET Core, .NET MAUI, Windows Forms
- Supported by Visual Studio 2026 Insiders and C# Dev Kit
- CborReader reads chunked payloads using isFinalBlock and SlideData in Lax conformance mode.
- CompositeMLKem and Hpke are new experimental cryptography types.
- ValidationAttribute.FormatMessage allows a host to supply a message template.
- SocketsHttpHandler.InitialHttp2MaxConcurrentStreams caps streams on new HTTP/2 connections.
- CoreCLR disables advisory file locking by default on iOS and tvOS.
.NET 11 Release Candidate 2 Now Available
.NET 11 Release Candidate 2 has been released, providing go-live support for developers to use this version in production applications. This marks a significant step towards the final release of .NET 11, allowing for broader adoption and testing in real-world scenarios.
Key Updates Across Components
The release includes various improvements across the .NET ecosystem. Libraries now support incremental CBOR reading and experimental composite ML-KEM and HPKE APIs. The SDK features quoted file-level directive values and MSBuild properties in launch-profile arguments. F# gains runtime async support, reraise in computation expressions, and compiler memory usage improvements.
Framework-Specific Enhancements
ASP.NET Core and .NET MAUI also receive updates. .NET MAUI now supports creating apps with C# UI, using Apple Icon Composer assets, and XAML authoring with Hot Reload. Windows Forms includes visual style updates, reactions to Windows settings, deferred form reveal, and a new KioskModeManager component.
Development Environment Support
To get started with .NET 11 RC2, developers can install the .NET 11 SDK. The release is supported in the new Visual Studio 2026 Insiders release and Visual Studio Code when used with the C# Dev Kit extension, providing integrated development experiences.
Updates
- CborReader reads chunked payloads using isFinalBlock and SlideData in Lax conformance mode.
- CompositeMLKem and Hpke are new experimental cryptography types.
- ValidationAttribute.FormatMessage allows a host to supply a message template.
- SocketsHttpHandler.InitialHttp2MaxConcurrentStreams caps streams on new HTTP/2 connections.
- CoreCLR disables advisory file locking by default on iOS and tvOS.
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Primary sources
GitHub dotnet/coreHow outlets covered it
Microsoft released .NET 11 Release Candidate 2, which includes a go-live license for production use. This update brings changes across libraries, runtime, SDK, NuGet, F#, ASP.NET Core, .NET MAUI, and Windows Forms, focusing on reliability and minor feature enhancements.
.NET 11 Release Candidate 2 is now available, offering go-live support for production applications. This release introduces updates across libraries, runtime, SDK, F#, ASP.NET Core, .NET MAUI, and Windows Forms, and is supported in Visual Studio 2026 Insiders and Visual Studio Code with C# Dev Kit.