Not included in the announcement was the fact that Demiurge Studios was working on Green Day: Rock Band. And I gotta say, it’s pretty freakin’ awesome working on it. I’d love to tell you more, but NDAs, yada yada yada, so I can’t say much else.
http://adamrosenfield.com/blog/2010/01/12/green-day-rock-band/

Not actually all that surprising, so I reckon the second game MTV was alluding to is Rock Band 3.