Welcome to .NET 9! We're happy to deliver the first preview of .NET 9 and share in-depth release notes that provide varied and impressive improvements for the first preview out of the gate. We also published Our Vision for .NET 9, which describes some of the broad areas we intend to deliver on by the final November 2024 release.

You can find detailed release notes about the new features in .NET 9 Preview 1 and up-to-date What's new in .NET 9 in .NET docs.

The latest .NET 9 release is always available at dotnet.microsoft.com and .NET 9 Releases.

You may be surprised to be reading about our release on GitHub Discussions. Check out Welcome to .NET Release News on GitHub Discussions! to learn more about how we're approaching documenting and sharing preview releases.

Team Announcements

Check out the team announcements.

• .NET 9: Announcement
• .NET Data and EF Core: Announcement
• .NET MAUI: Announcement
• ASP.NET Core: Announcement
• Libraries Announcement
• Runtime: Announcement
• Containers: Announcement

Please tell us what you think about the new release. There is lots more to come!