Hearing about it is one thing, seeing it in action is another. Here is the debut trailer for Activision's strike back against Rock Band, Guitar Hero World Tour. It features drums, guitars, bass, and microphones, but these drums go to eleven. The trailer promises the largest set list ever, the ability to record and share your own single of the song you are performing, and a battle of the bands mode, but none of those are as exciting as the simple fact that the team behind Guitar Hero III is doing it. Anyone who has played guitar in both Rock Band and Guitar Hero knows that GH owns the guitar. Apply that same science to the drums and I just might be regretting I hopped on the Rock Band...bandwagon so soon, taking up all the space I have in my apartment for fake musical instruments.
@PegasusActual: "Didn't GH3 kick Rock Band's ass in sales? You all act like Guitar Hero is now irrelevant because of Rock Band. I don't buy it."
For my social circle, it is...but that's neither here nor there. If you mean in total copies sold, then yes, GHIII clearly ruled Rock Band (roughly 6 million copies across 4 platforms versus 3 million copies across two platforms). However, Rock Band has also sold 10 million songs since launch. That's a HUGE revenue stream and EA highlighted that it pushed their sales forecast up because of it.
GH3 decided to appeal to the hardcore, while RB appealed to the group player. I've never beaten a song on Expert...not on GHII, not on GHIII and not on Rock Band. But we continue to get together weekly to enjoy Rock Band...something I can't say for GHIII. And RB didn't treat Co-op quickplay as an afterthought.