Patch 5.4 is coming and Blizzard just dropped this cinematic a few days ago. Watch it, watch it now. I'll wait.
I know right!!!! Fricken'-A, if you didn't hate him before. I'm glad, though, that they don't seem to be going the route of "A Sha did it" explanation for his behavior. He seems a genuine egotistical maniac intent on domination. The act in this video really means death is the only option for him. Great cinematic, great lore...can't wait to raid.