Spring Boot 4.0.0 RC2 Release Notes

Spring Boot 4.0.0-RC2 Release Notes

For changes in earlier milestones, please refer to:

• v4.0.0-RC1

• v4.0.0-M3

• v4.0.0-M2

• v4.0.0-M1

Upgrading from Spring Boot 3.5

Migration Guide

To help with upgrading, a migration guide is available.

New and Noteworthy

Tip	Check the configuration changelog for a complete overview of the changes in configuration.

Dependency Upgrades

Spring Boot 4.0.0-RC2 moves to new versions of several Spring projects:

*

A few third-party dependencies have also been updated:

• Elasticsearch Client 9.2

Miscellaneous

Apart from the changes listed above, there have also been lots of minor tweaks and improvements including:

*

Deprecations in Spring Boot 4.0.0-RC2

• None