That's right. AD&D is going to be on the market! No, not that AD&D. Adventures Dark and Deep. Alot of folks have been waiting for this "alternate reality retro-clone" for quite some time. I'm likely not the first person that you are hearing this from... today. Joseph Bloch of the "Greyhawk Grognard" blog, who appears to be the retro-clone of Mordenkainen, is kicking off his own clone, which he has spoken about and supported for a while now. The gist is this:
"Adventures Dark and Deep™ is an attempt to explore what the world's most popular role-playing game might have looked like if its creator had been allowed to continue developing it, rather than leaving TSR in 1985.