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After considerable thought and a little research I believe that Titan will be released much later than originally anticipated. This is only solidified by the upcoming expansions of World of Warcraft and StarCraft 2. Reason being is that Titan is not expected to replace World of Warcraft but to bridge the gap between World of Warcraft and StarCraft 2. With that said we have to look into what is on the horizon not just for Titan, but for World of Warcraft and StarCraft 2. Probably has everyone has seen the blizzard production slate shows the World of Warcraft movie and yet another expansion. As for StarCraft 2 it has already been confirmed that there would be a third expansion for StarCraft 2. It is expected that all three games will be running simultaneously since they will appeal to vastly different markets.
StarCraft II: Legacy of the Void early 2015
World of Warcraft movie in production 2013 release 2015
World of Warcraft expansion 5/6 already confirmed late 2013/late 2014
So it would be reasonable to think that Titan would be released in mid-2015 as that current reports have Titan project halfway done and it has been speculated work commenced around 2007.