Rock Band 2 patched on 360, PS3 update coming soon
Rock Band 2 received a title update earlier today on Xbox 360, which added support to wireless mics, especially the LIPS mics from Microsoft.
Hammer-ons and pull-offs were fixed, background downloading for music store purchases was added and "Audition Mode" was added as well, so that Rock Band Network users can test their created tracks.
Harmonix's Sean Baptiste explained in the Rock Band forums that the update for PS3 is undergoing certification and will be implemented soon.
Via Joystiq.