In this article from WIRED they say that it is all compatible, and it even compresses the 5 button GH track to 4 when you plug in a Rock Band 1 or 2 drum set. It even has MIDI outputs that will let you plug the drum set into any electric drum machine. You can even plug in a second bass pedal if you want to play two bass drums.
http://blog.wired.com/games/2008/07/xbox-rock-band.html
yes it will guitar hero controllers work on rock band
Short answer yes. Long answer *XBOX 360 ONLY*: all Guitar Hero controllers work with all Guitar Hero games. All Rock Band controllers work with all Rock Band games (the Pro Guitar will only work as a regular guitar due to lack of coding in Rock Band 1, 2, Green Day, Beatles, and LEGO). All Guitar Hero controllers will work with ALL Rock Band games. Rock Band controllers will NOT work with Guitar Hero 2.
the rock band controllers work for guitar hero world tour only
Yes any Guitar Hero guitar controllers will work on Rockband.
No
no, I don't think rock band controllers will work on guitar hero,but vice versa will work.
when rock band 2 and guitar hero 4 come out, anyone who has rock band for any system EXCEPT wii will be able to use their rock band stuff for guitar hero, but u can't use guitarhero controllers for rock band
yeah
Yes.
no
yes
Yes it should all guitar hero guitar controllers work with all guitar hero games and all Rock band games