Over in Japan, a brand new game in the Pokemon Mystery Dungeon series has been announced. It's called Pokémon Mystery Dungeon: Magnagate and the Infinite Labyrinth. The premise is the same as the earlier games in there series, where the player is transformed into a Pokemon, except this version will include all of the Unova Pokemon.
You can watch a trailer for the game over on PokemonCoJp's YouTube page. It shows quite a bit of the gameplay, too!
From the gameplay shown, it appears that only a select few Pokemon are selectable, although there may be a reason for this. Thankfully, all of the Pokemon are rendered in full 3D, and not with the basic style seen in Pokemon Rumble Blast, either.
Definitely give it a watch, because it looks like it should be rather fun!
One other Black 2 / White 2 localization note: Seigaiha City has been confirmed as Humilau City.