Diii.net follows up on indications that Blizzard is at work on a fifth project based on recent job listings (thanks Eurogamer). Word is this is a brand-new game, it will use the WoW engine for testing, but will use an entirely new engine built from the ground up for the finished game. What is not clear is whether this will be based on a new or an existing IP. The other four projects Blizzard is currently working on are the next World of Warcraft expansion, StarCraft II, Diablo III, and a new MMOG for which no details have been released.