Also, the Tower Block DVD cover is *quite* spoilery, so maybe don't look if you haven't seen it. It's yet another variant cover though, and really nice. This is going to be expensive, collecting them all... Oh, the CvsZ cover is amazing too, it's the brilliant Japanese poster they used, which you can see on their official website here.
Update again: both covers are shown below. Don't enlarge the Tower Block one if you haven't seen the movie! It's too small to see spoilers right now, but the full size one gives too much away. You have been warned.