From the Article: Harmonix pretty much sold us on it with one pretty badass trick: the ability to simultaneously play Rock Band 3 on Pro Expert and rock the same tune through an amplifier. Bonus: in the presentation we saw, extra notes and added fills didn't seem to affect score. So, that just about turns the uncanny valley of plastic peripherals on its head. couldn't figure out how to embed the video but here's the link If you're a gamer or somebody that might want to actually learn the guitar but found practice a bit dry, this might be your thing.
Impressive. I was having a hard time with 4 buttons and a strum bar on medium. I am really screwed now. Gonna have to go dig out my Super Nintendo and rock Tetris for a while. Make myself feel good about myself again.