Blizzard posted some much anticipated information about Naxxramas today in the form of a short story. Also located in the link is a cool new wallpaper.

Once, Kel'Thuzad was not very different from the other magi of Dalaran. Ambitious, maybe, perhaps more radical in his convictions, but certainly not more powerful than his peers. Yet it was Kel'Thuzad the Lich King made into a key figure of the Scourge's remorseless assault on the lands of the living. Now, the man named Kel'Thuzad is gone, and all that remains is Kel'Thuzad the lich, right hand of the Lich King and ruler of the necropolis Naxxramas. What evil was it that led him down this path? Learn more about the events that darkened the fate of Kel'Thuzad, and ultimately of all Azeroth, in Road to Damnation, a short story preview of the upcoming content patch for World of Warcraft.