Maven 3 RC1 - available for early adapters / beta testers
See: Please try Maven 3.0 RC1! by Jason van Zyl.
Anyone interested in taking a preview of the upcoming release for a test drive can get source and binary bundles from this URL:
And yes take a closer look @ the compatebility note's
Another thing before you fully adopt maven 3 make sure all the plugins you are using have M3 support :) see: Maven 3.x Plugin Compatibility Matrix.