Tomorrow the Lord of the Rings Limited Edition DVDs go on sale. They've already released the theatrical edition and extended edition, so why a limited edition? According to the official movie web site the main appeal is new documentaries on each film. The sets also include the movies because "releasing these documentaries unaccompanied by the film would be nearly impossible because of agreements that are in place with the cast and crew."
Each film is a two-disk set. Disk 1 contains the theatrical and extended edition of the film. Disk 2 is all the new behind-the-scenes documentaries. Each set is $20 on the movie web site, so they'll be somewhat cheaper at Wal-Mart, Target, etc.
LotR and DVD geek that I am, I'm tempted. I bought both the theatrical edition and extended edition of each film so I'd have all the documentaries. Curse you, Peter Jackson, for tempting me with even more...
UPDATE Aug. 30: Read reviews on Tolkien News. General consensus: the new documentaries are enjoyable but it's not worth it if you already own the previous verisons. That might be why I couldn't find them at Wal-Mart!