CVG posted an article featuring the Warcraft III: Reign of Chaos lore summarizing Arthas’ path into madness. It is part one of two. The second part promises some revealing details straight from Blizzard concerning the upcoming WoW expansion.
CVG: The last you see of Arthas is him walking towards the Frozen Throne, where he puts on the Lich King’s helm and fuses with the Lord of the Undead, creating a physical form for the long-ethereal creature. So, basically you should get levelling, because he’s not going to kill himself, is he?
Coming soon: Part two – Blizzard spills hot beans on the new World of Warcraft expansion.