Here's a list of the most noteworthy things in the RAP 3.22 RC2 release candidate which is available for download since September 09, 2022.
In order to mirror the PGP signatures of external dependencies during the build into the RAP p2 repositories, an upgrade of Eclipse Tycho to version 2.7.5 was required in RAP Runtime and Tools. With this change, the RAP p2 repositories are kept in compliance with the Eclipse Simultaneous Release guidelines.
To assist you with the migration from RAP 2.x (or 1.x) to 3.0, we provide a migration guide.