I see two more xpacs, I'm with Laerrus. Until I have a better idea on their plans for the 86-90 xpac I wont have much to input here, aside from the fact that Sargeras is 99.9% the last boss of the entire game. The titans will certainly be involved in that battle/xpac.
---------- Post added 2011-01-26 at 01:42 PM ----------
Wrong... Good companies have at least a sketch of a plan that far out, even if it's not detailed yet. There's no way a multi-billion dollar corporation could successfully survive without long-range planning.