We want to create a smooth transition between adventures. The Warcraft 3 saga ends with the climactic battle atop Icecrown between Arthas and Illidan - but what happens next? What leads up to the events of WoW? That's a story we've hinted at, but we've never been able to properly tell, and we're excited that we now get the chance to, so we're expanding the ending a bit. Arthas ascends to become the Lich King, but what happens to Illidan? Well, now you get to find out. I don't want to spoil too much, but it's pretty exciting. His battle with Arthas left him deeply weakened, so he tries to flee Northrend. He almost gets to the coast, but with his senses and skills both taxed by his wounds, he's easy prey for a Scourge ambush, which knocks him out and takes him prisoner. They use a carriage to send him across the frozen wastelands of Northrend back to Icecrown, where he is to be executed by the King. Along the way, he slowly starts to regain consciousness, and one of his fellow prisoners says to him "Hey, you. You're finally awake. You were trying to flee the continent, right? Walked right into that Undead ambush same as us, and that troll over there."