The book that they have been marketing online as 'The art of The Dark Knight' is really misleading as to what you actually get and what the book actually says on the cover. The book itself is called 'The Dark Knight: Featuring production art and complete shooting script' and it's more geared to the script, as there are only sixty pages that cover art and photos. There is some good stuff in there, but it's only scraping the surface. It's nice to have the script, but if you are expecting a comprehensive selection of art you will be disappointed.
I don't understand why they didn't do what they did for Begins by producing an art book and a seperate script book. The Dark Knight, in England, has hardly been marketed at all from what I can tell. You've had a couple of TV spots on random channels, and posters on buses, but not much else. No merchandise in the shops; no product tie-ins, etc. They didn't even release the 'art' book until yesterday.