Although it's supposed to begin on the 12th, the English-language Mewtwo event is available now.
Card title: Mewtwo returns!
Card comment: Thank you for playing Pokémon!
Play with the powerful Mewtwo and
show it off to friends in battle!
Icon: Mewtwo
Date card received: 2012-02-10
I downloaded it via Nintendo WFC, then extracted it from my Pokémon White card. Sorry for the lack of a picture.
Guested edit: Thanks! Working on adding this in right now.
Don't worry about the photo, I meant that for in-life events, not wi-fi.