Here's a summary of what's new in ASP.NET Core in this preview release:

• Configure custom security descriptors for HTTP.sys request queues
• Validation resolver APIs marked as experimental
• Support for generating OpenAPI 3.1
• OpenAPI metadata from XML doc comments
• Add a Not Found page using the Blazor Router
• Blazor metrics and tracing

ASP.NET Core updates in .NET 10:

• What's new in ASP.NET Core in .NET 10 documentation.
• Breaking changes
• Roadmap