Im pretty excited for this title and I do think it will come over here at some point on the Wii U. I agree though to keep in mind there is always that chance it wont but with how Nintendo has had to try and bring itself back up after alot of struggle I dont think they would miss a chance on this game to release it everywhere. Japan does have more a pokemon fanbase, I mean....they have bloody vending machines that carry pokemon items! Which Im jelly over but I think their is a big enough fanbase here and other places to warrant release. I also think they will keep the Wii U in mind when working on the game for arcades so they know they can port it. So Im not too worried but like you said its best to keep that chance of "it might not" in mind. Im still excited regardless and I cant wait to see what pokemon will be in it!