I just saw that german Kalypso Media has announced a game called "Dungeons". Why I am posting this in here? Because it very much looks like Dungeon Keeper: Some screenshots.
I couldn't find a english press release yet, but some information from the german one:
It can be played on the this years GamesCom in Cologne, planned release is first quarter of 2011, 20 campaign missions, 15 different creatures, etc. etc. rest sounds exactly like Dungeon Keeper.
I take it from the screenshots that you still play as 'the bad guy', killing those insanely annoying goody goody fantasy knight dorks? Would be great, though I wonder if they'll manage to get anywhere near the humor value of Dungeon Keeper 2 (never played the first one).