From Terminal Gamer:
"Here is a list of 10 new ideas that Harmonix should think about implementing in RB3. I'm talking new stuff here, so having songs from RB1/RB2/DLC be exportable to RB3 is a given, as is online multiplayer and some form of career mode. I also tried to think of things that haven't been mentioned before, so as much as we all want it, you won't find "LED ZEPPELIN" anywhere on this list."
(AC/DC Live Rock Band Track Pack, Beatles: Rock Band, Green Day: Rock Band, Lego Rock Band, PS3, Rock Band, Rock Band 2, Rock Band 2: Special Edition, Rock Band 3, Rock Band 6, Rock Band Country Track Pack, Rock Band Metal Track Pack, Rock Band Pearl Jam Live, Rock Band Track Pack Volume 2, Rock Band Track Pack: Classic Rock, Rock Band: AC DC Live, Rock Band: AC/DC, Rock Band: The Queen Pack, SingStar: The Beatles Rock Band, The Beatles Rock Band: Abbey Road DLC, The Beatles Rock Band: Rubber Soul DLC, The Beatles: Rock Band, The Beatles: Rock Band Sgt. Pepper’s DLC, The Who: Rock Band, Wii, Xbox 360)