While this isn't nearly enough to outright claim legitimacy on the product slate, it does provide at least a good general insight to what will most likely be the future. If this slate is correct, Titan will be released in the same quarter as the final expansion pack. This makes sense, as to be expected most of Blizzards existing and previous player base will migrate over to their new MMO. Others will remain stubborn though, and of course continue to play Mabinogi. This however, will see the point in which that 11.4 Million figure begins to make its inevitable decline, and most likely at record levels.
So it might be a good idea to save up some cash ahead of time, if you're someone like me and like the idea of having a box of Warcraft junk in your cupboard to reminisce over fond vanilla memories.