Compass version 2.0.0 RC2 has been released. The release include minor bug fixes and improved support for polymorphic operations both in the API and the query string level. Check out the release notes for more information.
Ohh, and one last thing for all you Maven lovers out there, Compass now has a maven repository at repo.compass-project.org hosting both 1.2.2 and 2.0.0 RC2 versions. Hopefully later on it will get synced with maven central repository.