.NET 9 Release Candidate 1 is now available. This is our first of two release candidates. This release includes enhanced WebSocket APIs, new compression options, advanced SignalR tracing, and updates to .NET MAUI for better text alignment, and more. Check out the full release notes linked below and get started today.
Get ready for .NET Conf!
The dates for .NET Conf 2024 have been announced! Join us November 12-14, 2024 to celebrate the .NET 8 release!
This release contains the following improvements.
Libraries
WebSocket Keep-Alive Ping and Timeout APIs
Add ZLib, Brotli compression options
Add TarEntry.DataOffset
HttpClientFactory no longer logs header values by default
Out-of-proc Meter wildcard listening
Full release notes
SDK
Workload History
Full release notes
ASP.NET Core
Improvements to SignalR distributed tracing
Keep-alive timeout for WebSockets
Keyed DI in middleware
Override InputNumber type attribute
Trust the ASP.NET Core HTTPS development certificate on Linux
Full release notes
.NET MAUI
Added HorizontalTextAlignment.Justify
Full release notes
Get started
To get started with .NET 9, install the .NET 9 SDK.
If you’re on Windows using Visual Studio, we recommend installing the latest Visual Studio 2022 preview. .NET 9 can now be installed directly through the Visual Studio installer starting with Visual Studio 2022 17.12 Preview 2.
You can also use Visual Studio Code and the C# Dev Kit extension with .NET 9.
Team Announcements & Discussions
The team has been making monthly announcements alongside full release notes on the dotnet/core GitHub Discussions and has seen great engagement and feedback from the community. We will continue to post each new release on GitHub, but as we get closer to launch this November alongside .NET Conf 2024 (save the date today!), we wanted to cross-post our release details on the .NET blog.
.NET MAUI
ASP.NET Core(https://github.com/dotnet/aspnetcore/discussions/57787)
Libraries & Runtime
Stay up-to-date with .NET 9
You can stay up-to-date with all the features of .NET 9 with:
What’s new in .NET 9
What’s new in ASP.NET Core
What’s new in .NET MAUI
What’s new in EF Core
Breaking Changes in .NET 9
.NET 9 Releases
Additionally, be sure to subscribe to the GitHub Discussions RSS news feed for all release announcements.
We want your feedback, so head over to the .NET 9 Release Candidate 1 GitHub Discussion to discuss features and give feedback for this release.
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