During Comic-Con, Harmonix revealed six new tracks for Rock Band 3 that will be out in a couple of months. The tracks, according to Destructoid are...
The B-52s' "Rock Lobster"
Def Leppard's "Foolin'"
Tears for Fears' "Everybody Wants To Rule The World"
Marilyn Manson's "Beautiful People"
Filter's "Hey Man Nice Shot"
Foreigner's "Cold As Ice"
As long as I don't have to do "Rock Lobster" on lyrics, I think I'll be fine.