They haven't made any mention of making another one as far as I'm aware.
We may not see any new Home Console Pokemon game until the Wii U comes out around November this year (suggested date).
Personally I don't want another PBR. I want a new Stadium with the Minigames and everything. Colosseum wouldn't be bad either, but I prefer having a new Stadium Game. With the Gym Leader Castle, Mini Games, Game Storage, and everything.
There isnt going to be a PBR 2. It was horrible, and if I recall didnt sell too well.
I'm pretty sure that you don't make the say so on any game release at Game Freak, so your opinion doesn't matter to them. Anyway... I have been waiting patiently for the sequel. I'm ready to bring fifth generation battles to the big screen so I can record them and upload them online. A story would also be nice. I loved XD and Colosseum.
According to the horrible reviews I got from it, as well as online, I don't think they plan on having another one. To me, it looked like they were going to make another XD/Collusseum game, but scratched it, and decided to use the battle sequencing as it's own game.