The article ‘Announcing .NET Core 3.0’ was posted on September 23rd, 2019 at the .NET Blog on Microsoft’s DevBlogs. It includes the highlight reel as well as changes and updates to associated software.

The post can be found at https://devblogs.microsoft.com/dotnet/announcing-net-core-3-0/

The next release after .NET Core 3 will be .NET 5 which unifies everything according to this article, ‘Introducing .NET 5’ also on the .NET Blog at https://devblogs.microsoft.com/dotnet/introducing-net-5/