Today, we’re announcing .NET Core 3.0 Release Candidate 1. Just like with Preview 9, we’ve focused on polishing .NET Core 3.0 for a final release. We are now getting very, very close. We intend to release the final version on September 23 at .NET Conf.
Read more: https://devblogs.microsoft.com/dotnet/announcing-net-core-3-0-release-candidate-1/