Newsrama has released some of the covers for the upcoming Friendship is Magic comic book. It sounds like there will be one for each of the mane 6, with a giant image forming when you collect all of them. They do also have the option of straight up buying them in a box set (see below) for 24.99 if you aren't in the mood to hunt.
Yes, that is Vinyl Scratch, and yes, Celestia looks like a badass on that Twilight Sparkle cover. I love it already!
Andy Price released a bit of in depth information on how this will work over at his Deviant Art page, as well as Bleeding Cool.