It seems more clear than ever that we're headed to Northrend in the next expansion. And so, via our good friends at Joystiq, here's a little refresher from the last time we were there.
That's our buddy Arthas, wielding Frostmourne and meeting up with (and becoming, most likely) the Lich King during the very last cutscene of Warcraft III. That building he's hanging out in is Icecrown Citadel, which will very likely be a raid dungeon at some point in WoW. The voice saying, "Forget this business" is Muradin Bronzebeard, and the voice questioning Arthas' sanity is Uther the Lightbringer himself, whom Arthas murdered (and whose tomb is found right now in the Western Plaguelands). And of course as far as we know, Arthas is still sitting on that throne, ready to appear.. in a brand new cinematic on Friday at BlizzCon?
Update: My fault, I thought both voices were Uther. Should have realized no Human would ever have an accent like that.