Rock Band Blitz happened in 360.
yes
No
Yes, it will
yes
No, a PlayStation 3 Rock Band 2 controller will not work with the Xbox 360.
yes
Yes. Well it is with the xBox 360.
The Xbox 360 game bundle for Rock Band Video game does
Yes
Yes, all rock band instruments work on every rock band game
no Xbox 360 does not work on the PS3