Another BTTF DVD notice: the Back to the Future DVD box set is now available for pre-order (or wishlisting) from Amazon.com. The release date listed is, indeed, December 17, and the pre-order price is $41.24.
Other sources already mentioned are probably better resources for details on the discs than the Amazon.com catalog entry, at least during these early stages. See this report on the region 1 promotional campaign for a feature list. I wonder if the documentary from the VHS collector set of many years ago will make an appearance on these discs; I'm sure most of the footage will appear in some form, but finicky fans demand completeness!
BTTF.com has some fantastic collector's merchandise available. If I weren't trying to cut down on extraneous spending, I'd be ordering one of each. (Except maybe the old McDonalds toys.)
Beward of the BTTF DVDs.
All copies of the box-set contain serious framing errors which mean loads of important details is cut out and missed offscreen.
Universal are correcting the problem with a new set: Version 2. If you bought the original set, you can get some free replacement discs.
See the site above for details of how top claim yours.