I'll keep saying it until backwards compatibility is announced one way or the other: If it weren't going to be possible, why would Game Freak say they were working on it at E3? They would have said "no comment" or whatever if they couldn't figure something out. --- THAT'S MISS FUNERAL CAKE TO YOU do you wanna die or just come real close?
They'll make it happen, one way or another. The leading thought is that the easiest way to do it is via an app, but I'm sure GF is looking into (or has already found) an easier, more intuitive way to do it.
. And that's the only unsolved mystery that has yet to be answered, is whether or not it will return.
Contests? Starter's Types? # of new Pokemon? A third "Z" legendary? Fairy's effectiveness on other types? Will every fully-evolved Pokemon get a Mega? Team Flare's goal?
I'd hardly say that it's the only unsolved mystery left. --- The Official Bulbasaur of Pokemon X's board Bowser Jr, T Zelda, Ridley, Palutena, Pittoo, Isaac, Shulk, Mewtwo, Robin, Balloon Fight, Crono, Mii, Megaman, Neku