Rock Band Blitz Dated

Take control of whole band
Harmonix today announced that Rock Band Blitz, an all-new way to experience your favorite songs (no instrument peripherals needed) is scheduled to be available on August 28th (Xbox LIVE) and August 29th, 2012 (PlayStation Store). Rock Band Blitz will arrive bundled with over 20 songs, and works instantly with any of the 3500+ Rock Band songs.