Hints that it could be a WoW expansion: Ra-Den hinted of a dark chasm at the bottom of an abyss, so it could be "The Dark Below". It will go back to the "dark on the surface" theme that was present in TBC/WOTLK/Cata.Hints that it could be a D3 expansion: The Black Soulstone survived falling from the High Heavens, if you watched the cinematic. The old Archangel of Wisdom still wanders the wastes, so he would be a potential villain candidate when he finds out Tyrael has taken his place. Adria still exists after betraying us. All of these could be potential villains for the next expansion. We'll see at Gamescom for this one.Wait! I am... I am not your enemy. You are powerful, more powerful than he was, even... perhaps you are right. Perhaps there is still hope.
But there is a yawning chasm of darkness beneath you mortals, vast, endless, and all consuming. I do not believe that you can correct this doomed course.
But you have earned the right to try. Farewell.