it's one of my favourites.
I'm totally gunna call this for the record, but there WILL be a Pokemon Rainbow version. Just you wait, it'll happen.
Serebii.net has some release pictures for B&W, they're incorperating the 3D aspects from DPPHGSS, so everything will be in 3D. Pokemon battles now show the full backside of pokemon, [person who's cosplaying snorlax should be happy about this], the pokemon center has been re-designed, and from what it looks like from the pre-release pics the characters are coustomizable.
The two newly released pokemon are:
Zorua
Zoroark
Please correct me if I'm wrong.