People have been having mixed feelings about the recently-announced Mewtwo-like Pokemon. Not much is known about it, so a lot of the details are left up to speculation.
However, we have new evidence that this Pokemon will, in fact, be related to Mewtwo in some way, According to a video released by Pokemon Company International, the legendary Mewtwo transforms into the new Pokemon.
The video, which you can watch below, doesn't go into much more detail besides showing this transformation so we can't say what causes the transformation. Speculation surrounding the video says that it could be an evolved form.
In the world of Pokemon, evolutions aren't as simple as just leveling up a character, so this could be a lot more complicated than first impressions make it seem.
We'll have more information as it comes in, but for now, all we can do is hype around Pokemon X and Y just like the rest of you.