New Rock Band details - Fender Strat controller coming
When asked about whether the new controllers will be compatible with Guitar Hero III onwards, or vice-versa, Harmonix responded saying that they would love for that to be the case. Guitar Hero I and II controllers will be compatible with Rock Band (cutting the price slightly for those wanting the Ultimate Rock Band experience), but that the new controllers would have a couple of new features over the old ones. Whether the new Fender Strat controllers will be compatible with Guitar Hero III, however, is up to Activision but is something the guys at Harmonix would be very interested in making happen.
Responding to worries of a lack of single player mode, due to the apparent focus on online-play, Harmonix made sure to reassure everyone that there will be a "deep, complete solo experience" for each of the different instruments. So that Guitar Hero, Donkey Konga, Singstar combination idea you thought up down the pub last year is even closer than you think. As for fears that the online play might be ruined by lag, we're told not to worry. It's a problem "for which we have a unique solution...and it's a heck of a lot of fun in action."