Today is Star Wars day (May the Fourth...get it?!), so Lucas and co. have announced the full rundown of what to expect from the entire six-movie Blu-ray set they're releasing on September 16th.
So you'll get both the original trilogy and the prequel trilogy, all in HD, and each with both a newly recorded commentary track and one spliced together from archival interviews with the cast and crew. Most notably, Carrie Fisher recorded commentary for the original trilogy, so hopefully there are some stories about her doing lines off Darth Vader's helmet or something equally insane.
There are also three full discs of extras: one disc each for "archives" from the two trilogies, including deleted, extended and alternate scenes, and one disc of documentaries. The docs range from old made-for-TV specials to spoofs of the series over the years to behind-the-scenes featurettes. Not included: the infamous Star Wars Christmas special. Maybe for the 3D Blu-rays in a decade, eh?