I hate to be negative but me and few of my vrienden believe some of the artikels about Pokemon B2/W2 being the last games, and the reason for this is about the name of the games and the order of it.
It was like a cycle:
Color >> Minerals >> Gems >> Minerals >> Colors
We also believe that if there is going to be any new Pokemon games they will probably be remakes of Ruby/Sapphire.
Tell me what u think of what me and my vrienden believe will happen after B2/W2.