the rumor/story i have heard recently on a vid podcast related to WoW is that "Titan" is actually the Halo MMO which they are developing b/c that name "titan" was the working internal title of the Halo MMO that never saw the light of day..

the rumor out there now is that "Titan" having been the working title of the unannounced Halo MMO might be just that by Blizzard. MMOFPS as a next generation MMO?