I'm sorry, but I just can't see a Gen 7 happening... They've GOT to be running out of ideas by now.People say that every generation. Literally. And they're proven wrong every time.
(And even if they ran out of ideas, there's too much money to be made to just quit. Even a generation with, say, 50 new Pokémon would sell really well if there's a good region design behind it, and believe me, they haven't come anywhere near to exhausting region design ideas.)