Hi there, With all the recent rumors going around I figured I'd share my take on the D4 rumor. Blizzard is a business so to me its highly unlikely to see them retire the Diablo franchise, however we all know D3 wasn't really a huge success. At the same time, instead of focusing on Diablo Blizzard spent tons and tons of money on their Titan project which we all know failed to deliver. However despite abandoning Titan Blizzard most likely managed to develop a new engine for Titan which was left unused, perhaps a fraction of it was used for Overwatch but I believe that the engine has a much greater potential knowing how incredibly vast and complex Titan was supposed to be judging by the comments made by anonymous devs after the project was abandoned. Overwatch to me is a great game but it's far from complex. Therefore it's not unthinkable to believe that Diablo 4 might become an mmo built on the Titan engine. Of course, this is all pure speculation but knowing how much time Blizzard put into Titan and how much it costs to develop a new engine it's not economically feasible to spend that much without applying some kind of damage control.