Green Day, Rock Band 3

KEYS TO NEXT ROCK BAND 3 ITERATION: MTV and Harmonix rolled out a two-song demo for the upcoming Green Day: Rock Band which contains a teaser for Rock Band 3 that adds a keyboard icon for the first time alongside guitar, bass, drums and microphone. The company is booking previews of Rock Band 3 for the E3 conference in L.A. next month. (5/25p)