Microsoft announced the .NET Core 3.0 release by September 2019.

NET Core 3.0 is ready for production use and is loaded with lots of great new features for building amazing web apps with ASP.NET Core and Blazor.

Find some of the major new features included in ASP.NET Core 3.0

• Build rich interactive client-side web apps using C# instead of JavaScript using Blazor.
• Create high-performance back-end services with gRPC.
• SignalR now has support for automatic re-connection and client-to-server streaming.
• Generate strongly typed client code for Web APIs with OpenAPI documents.
• Endpoint routing integrated through the framework.
• HTTP/2 now enabled by default in Kestrel.
• Authentication support for Web APIs and single-page apps integrated with IdentityServer
• Support for certificate and Kerberos authentication.
• Integrates with the new System.Text.Json serializer.
• New generic host sets up common hosting services like dependency injection (DI), configuration, and logging.
• New Worker Service template for building long-running services.
• New EventCounters created for requests per second, total requests, current requests, and failed requests.
• Startup errors now reported to the Windows Event Log when hosted in IIS.
• Request pipeline integrated with with System.IO.Pipelines.
• Performance improvements across the entire stack.

You can find all the details about what’s new in ASP.NET Core in .NET Core 3.0 in the What’s new in ASP.NET Core 3.0 topic.

See the .NET Core 3.0 release notes for additional details and known issues.