# .NET 11 Preview 7

The seventh preview release of the .NET 11 developer platform, including preview C# 15 features.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## Explore new features available in C# 15 preview

DevFeed: [Explore new features available in C# 15 preview](<https://devfeed.tech/articles/explore-new-features-available-in-c-15-preview-2949.md>)

Original publisher: [Read original article](<https://devblogs.microsoft.com/dotnet/explore-csharp-15/>)

Author: Bill Wagner

Published: 2026-08-24T17:00:00Z

Content type: article

Language: en

Sources: [.NET Blog](<https://devfeed.tech/sources/net-blog.md>)

Topics: [C# 15](<https://devfeed.tech/topics/c-sharp-15.md>), [.NET](<https://devfeed.tech/topics/net.md>), [union types](<https://devfeed.tech/topics/union-types.md>), [.NET 11 Preview 7](<https://devfeed.tech/topics/net-11-preview-7.md>)

Tags: [blog](<https://devfeed.tech/tags/blog.md>), [c-sharp](<https://devfeed.tech/tags/c-sharp.md>), [c-sharp-15](<https://devfeed.tech/tags/c-sharp-15.md>), [closed-hierarchies](<https://devfeed.tech/tags/closed-hierarchies.md>), [dotnet](<https://devfeed.tech/tags/dotnet.md>), [features](<https://devfeed.tech/tags/features.md>), [net](<https://devfeed.tech/tags/net.md>), [net-11](<https://devfeed.tech/tags/net-11.md>), [net-11-preview-7](<https://devfeed.tech/tags/net-11-preview-7.md>), [union-types](<https://devfeed.tech/tags/union-types.md>)

### AI overview

An overview of the new features in C# 15, which ships with .NET 11. The article covers union types, closed hierarchies, the preview memory-safety redesign, and several smaller language changes.

### Source excerpt

C# 15 ships with .NET 11. It adds union types, closed hierarchies, a preview of the updated unsafe model, and a few smaller changes that remove everyday ceremony. The post Explore new features available in C# 15 preview appeared first on .NET Blog.