C# 11 is the next version of C# coming in .NET 7, and it is introducing a warning wave that issues a warning when a type is declared with all lower-case letters. This is being done so that in the future the language can begin moving away from conditional keywords and instead use full on keywords instead. The warning is alerting customers to types that may become keywords in future versions. 

Devs Demand Visual Studio 2022 Ditch Old .NET Framework Dependencies 

MVC in .NET 8
13 Videos
 

.NET 8 Web API from A to Z
19 videos 

Here’s a summary of what’s new in this preview release:

Servers & middleware
  Antiforgery middleware
API authoring
  Antiforgery integration for minimal APIs
Native AOT
  Request Delegate Generator supports interceptors feature
  Full TrimMode is used for web projects compiled with trimming enabled
  WebApplication.CreateEmptyBuilder
Blazor
  Antiforgery integration
  Server-side form handling improvements
  Auto render mode
  Register root-level cascading values
  Improved integration of interactive components with server-side rendering
  New EmptyContent parameter for Virtualize
Identity
  New bearer token authentication handler
  New API endpoints
Single page apps (SPA)
  New Visual Studio templates