Spring Boot 3.0.0 M3 Release Notes

For changes in earlier milestones, please refer to:

Upgrading from Spring Boot 2.x

Minimum Requirements Changes

None.

Actuator Metrics Export Properties

We have moved the properties controlling the actuator metrics export. The old schema was management.metrics.export.<product>, the new one is management.<product>.metrics.export (Example: the prometheus properties moved from management.metrics.export.prometheus to management.prometheus.metrics.export). If you are using the spring-boot-properties-migrator, you will get notified at startup. See #30381 for details.

New and Noteworthy

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

Reinstated Support for REST Assured

With it’s 5.0 release, REST Assured is compatible with Jakarta EE 9 and Groovy 4.0. As a result, support has been reinstated.

Dependency Upgrades

Spring Boot 3.0.0-M3 moves to new versions of several Spring projects:

TBD

Numerous third-party dependencies have also been updated, some of the more noteworthy of which are the following:

REST Assured 5.0

Miscellaneous

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

TBD

Deprecations in Spring Boot 3.0

The properties management.metrics.export.<product> are deprecated, the replacement is management.<product>.metrics.export. See above for more details.