This Dungeon Master's Guide is a black leather bound book. The new cover art is engraved in silver color, it has a blue ribbon for a bookmark and comes with a note from Bill Slavicsek. The text has been updated to include the most current errata.
From the web site:
The follow-up to the special edition Player's Handbook released in 2004 for the 30th anniversary of D&D, this special release of the Dungeon Master's Guide features an embossed, leather-bound cover and premium, gilt-edged paper.