The Rise of the Underdark isn’t restricted to the 4e products and novels, it’s also being rolled out in the facebook D&D game and more importantly, as a massive expansion to the Eberron based D&D Online MMO. Heres some details about what that expansion will contain:
The Menance of the Underdark beta launces on May 10th, my birthday! http://eq2.zam.com/story.html?story=29660
I love the Draegloth picture there, but again, it conflicts with the old minis and 3.5/4e versions of the demon halfbreed of drow.