For DS, Not 3DS
Nintendo has officially announced that the next Pokemon games will be direct sequels to Black and White, unimaginatively titled Pokemon Black and White 2. This is a first for the franchise, but more surprisingly, Nintendo has also announced that Black and White 2 will be DS titles rather than the series' first foray onto the 3DS proper. While some may balk at the move, there's no denying that the 3DS' 4-5 hour battery life is probably nowhere near powerful enough to support a Pokemon game - especially since you'll want to take it everywhere.
Shame, though, because the 3DS' Augmented Reality could have been a brave new opportunity for the long-running Game Freak powerhouse.
Pokemon Black and White 2 have been confirmed for an Autumn release in the UK.