Based on the press release, the 9/30 release is just the movie. No extra bells and whistles which is being saved for a later release, possibly in December. As a result of this lack of information, I continue to maintain that no one should buy the movie until can make an informed decision on which version to buy to avoid being forced to buy duplicate copies of the movie.
Update: A new ad of the upcoming release, promoting "Transformers Friday" has started airing. I saw it last night on Comedy Central. Thanks to Prime, here is a better quality version of the video.