From the press release:
This series gets the high-quality treatment it deserves in two gorgeous editions of the A Game of Thrones RPG: a mammoth 576-page deluxe limited edition in September and a 496-page standard edition in October. Both of these authoritative reference guides and roleplaying games include full-color printing on premium-quality paper, hardcover binding, a poster-sized color pull-out map of the continent of Westeros, and a host of stunning artwork and graphic design by a team of exceptionally talented artists. The standard edition includes full rules for playing A Game of Thrones under the Open Gaming License (using the “d20” game mechanics developed for Dungeons & Dragons).
[Link via The Alien Online]