Board Thread:Questions and Answers/@comment-24503066-20140208170118/@comment-25417435-20150408025054

Um, technically, they're still 6th generation since it takes place in Kalos three years after the events of Pokemon X and Y. It has the same Mega Evolutions, as well as the same new Mega Evolutions introduced in ORAS. It will also have new Mega Evolutions, not seen in XY and/or ORAS, too.