With World of Warcraft still going strong, we all know Blizzard is working on StarCraft 2, Diablo III and its next-gen MMO, but according to a recent job listing, Blizzard is looking for a Client Software Engineer who will be in charge of developing a new game engine from scratch, for a new, unannounced project that's not related to the aforementioned titles. Currently, the title is running on the World of Warcraft engine, but that is merely for testing purposes.