Spring Boot v1.4.0.M3 is available now from the Spring milestone repository. This release closes over 150 issues and introduces a number of new features.

Highlights include:

Lots of bug fixes and improvements over M2 (thanks to everyone for trying the milestones).

Convention based error pages (want a custom 404, just add src/main/resources/public/error/404.html ).

). Improved ErrorPage registration support.

Support for pluggable OAuth2 Principal extraction.

For a complete list of changes, and upgrade instructions, see the Spring Boot 1.4 Release Notes on the WIKI and the updated reference documentation.

As always, thanks to all our contributors and please continue to provide feedback and bug reports.

Hopefully we’ll see a few of you at the Spring I/O conference in Barcelona this week, or at SpringOne Platform in August!