Starphoenix
How Long Have I Been Asleep?
Considering AS/OR will likely come out months after Sm4sh 3DS has already been released, I think that is a safe bet. If Pokkén happens to be a real, expect Game Freak to push the fanservice and shoehorning with that game.IIRC, the Greninja trailer was missing Xerneas and Arceus despite those two being confirmed, so there's possibly some more Pokeball Pokémon that we haven't seen yet.
Having said that, I still don't think these remakes will have that much an impact on Smash.