Rumor has it that there will be a system that will allow you to more easily EV train your Pokemon. That kind of caught my interest - EV training is so time consuming now (though I don't battle competitively so I don't bother usually), though IVs are the biggest issue since they're completely random.
Supposedly, in the new Pokemon movie, another new Pokemon is revealed. A person who saw the film drew this picture of the Pokemon: I don't like this. A lot of JRPG's have an enemy like this. If this Pokemon is real, then I hate to admit it but Gamefreak may be running out of ideas. EDIT: Someone drew a more accurate picture of the Pokemon. This one's better than the last one. It's more original.
GameFreak released a new picture with the following caption: "the well known game, played all around the world, is about to be reborn thanks to a surprising collaboration" WHAT COULD THIS MEAN!?!