That's what I was thinking. He isn't the source and doesn't know it to be true himself anyway. We're all pretty certain though because of the English names being right, yeah. But he could just release it all as rumours that he has been sent.
WPM said yesterday, on another thread, that he probably won't post any of the insider information because of what TPCi would have to say (which is fair enough). I want to know just as much as everyone else though!
I can't help but wonder how Mewtwo will transform in the game. Going to find it really strange if it turns out there's more than one too. I like the look of the new forme though.