Board Thread:General Discussion/@comment-4749425-20130723185609/@comment-3361105-20130723192036

I wouldn't buy any version that doesn't say "Extended Cut" on it. It's only 9 minutes of extra footage, but that footage does help to make the movie make a little more sense, in terms of character development.

This one appears to be a single-disc version. One blu-ray, and then a code/link (available on a piece of paper slipped into the case) which gives you access to the ultra-violet version, which is basically a hi-def digital version.

If the case says "extended cut" on it, and there's no slip cover, the only difference is that you don't get a fancy cardboard sleeve.