On behalf of the team and everyone that contributed, I am happy to announce that the fourth milestone of Spring Boot 2.1 has been released and is available from our milestone repository. This release closes over 40 issues and pull requests.
This milestone ships with the latest Spring Framework 5.1 which went GA last week.
Along with the Spring Framework update, this release also includes a bunch of other dependency version updates.
If you want to get started with 2.1 and try out the new features, you can bootstrap a new project on https://start.spring.io.
We hope to release a release candidate mid-October and the 2.1 GA towards the end of October.