This Pokémon, and Mewtwo's original self are to appear in a new trailer for Extremespeed Genesect: Mewtwo Awakens on April 18th, with the secrets to unlocking the mystery within. Do note that the official sites are stating it's a new Pokémon, but that has happened in the past. We'll get confirmation on that as soon as we can
Can't quite remember what this is referring to. I am guessing Rotom. --- I'm a jukebox hero.
They said the Kyurem forms were new Pokémon, then they turned out to be variations of Kyurem. --- "Power of mind is infinite, while brawn is limited." Koichi Tohei Official Chespin of the Pokemon X board.