Bolt the Cat
Bringing the Thunder
I don't think, due to the Johto Dex likely remaining the same, that these new areas will provide new Pokemon, just more places for old ones. The new areas are likely to just be gimmick locations (Battle Frontier, WiiWare place, etc).
Then where do you think we'll get new pokemon like Groudon, Kyogre, and Rayquaza? They have to go somewhere.