Here’s what’s new in this preview release:

• Improved Blazor accessibility
• Required Blazor component parameters
• Efficient byte array transfers for JavaScript interop
• Optional parameters for view component tag helpers
• Angular template updated to Angular 12
• OpenAPI support for minimal APIs
• Inject services into minimal APIs without [FromServices] attribute
• Configure the accept socket for Kestrel
• IHttpActivityFeature
• Long running activity tag for SignalR connections
• WebSocket compression
• SignalR WebSockets TestServer support
• New OnCheckSlidingExpiration event for controlling cookie renewal
• ClientCertificateMode.DelayCertificate