Marvel's official PR for the project follows:
Marvel is proud to unveil the first full-length trailer to the hotly anticipated Astonishing X-Men: Gifted motion comic, based on the seminal comic story by superstar scribe Joss Whedon (Buffy: The Vampire Slayer) and renowned artist John Cassaday (Captain America). Now you can get your first look at Marvel's newest original motion comic (available October 28th on iTunes) as the X-Men embark on a bold new mission! Discover more at www.marvel.com/motioncomics, bub!
For those who think the storyline seems kind of familiar, you're right; it "influenced" the plot of X-Men: The Last Stand, much to Whedon's dissatisfaction. Us, we're hoping that the Disney/Marvel alliance may result in animation that doesn't remind us of Captain Pugwash.