This version contains upgrade to Java 21 and Spring Boot 2.7, so
for any module you want to use you need its upgraded version, older versions won't be compatible
you need to upgrade any customer specific module according to migration.md (all applicable steps from version you have now up to the Migrate from Java 11 to Java 21 section included)
despite our best effort, automated tests, and manual tests there's still higher risk of bugs to be found compared to minor releases
Migration guide: MIGRATION.md