Woohoo! I thought the release date was supposed to be December 22. I don't know why it came so early, but my wife got an email today from the bookstore saying it was in, and brought it home this evening.
It's really nice! There's a lot of gorgeous concept art, the book is very high quality.
Anyone else got theirs yet?
Edit: http://steamcommunity.com/sharedfiles/filedetails/?id=573056695.