There's enough info coming out of this now and it's going to be detailed at E3 in less than a month, so here it goes.
When you exit the demo of Green Day: Rock Band, you get this logo:
(From
http://www.destructoid.com/keyboards...o-174510.phtml )
I'm a little pumped to see this now. Especially with all the new song oppertunities if it is true.