From The Digital Bits:

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The 2-disc set will hit store shelves on 11/1, as we expected. Both anamorphic widescreen and full frame versions will be available, each with video mastered directly from the film's original digital master files. Audio will be Dolby Digital 5.1 EX. Extras are not yet fully announced, but we do know that you can expect audio commentary with George Lucas and members of the production team, a new feature-length documentary on the making of the film, 2 behind-the-scenes featurettes (one looks at Anakin Skywalker as "the chosen one" and the other deals with the film's stunt work), the 15-part Making Episode III web documentary and a number of newly-completed deleted scenes. You'll also get two playable levels of the Star Wars Battlefront II videogame (for Xbox we assume).