Microsoft has released the preview version of Entity Framework (EF) Core 6.0, which includes significant improvements and new features. The EF Core 6.0 preview introduces the ability to model query types, a new event aggregator, and an improved LINQ implementation. It also features improved performance, including better cold start times and faster queries. EF Core 6.0 preview also includes a preview of the .NET Data Provider for Oracle, which adds support for Oracle databases. The preview version also comes with breaking changes, which developers need to consider before upgrading their applications. The article recommends that developers experiment with the preview version to familiarize themselves with the changes and new features and provide feedback to Microsoft.

Check more information in the Microsoft dev blog: https://devblogs.microsoft.com/dotnet/announcing-ef8-preview-1/

Get it from NuGet if you want to try it: https://www.nuget.org/packages/Microsoft.EntityFrameworkCore/8.0.0-preview.1.23111.4