World of Warcraft: Wrath of the Lich King Preview, Part One

PC Zone has posted the first part of a new preview detailing Blizzard's World of Warcraft: Wrath of the Lich King expansion pack, while promising a lot more information in part 2. This part looks at how this expansion ties into Warcraft lore (of Warcraft III: The Frozen Throne).
Arthas then gets passed a message from his newly reanimated necromancer buddy that the Burning Legion's master, Archimonde can be summoned through a spell book residing in peaceful environs of Dalaran. Cue summoning of big nasty demon, cue destruction of the city-state of Dalaran (at least until it returns as a flying city in Lich King).

At this point Warcraft III expansion pack The Frozen Throne enters the catalogue of lore. Due to mysteriously fading Lich-puppet powers, a splinter group broke away from the Undead Scourge and called themselves the Forsaken (who are now a sentient, playable Undead faction in WOW). Concerned, Arthas heads north, where the Frozen Throne of Northrend is under attack by the Blood Elves.

Arriving in Northrend, Arthas battles away: annoying Dwarves and the claret-eyed Elven forces of Illidan Stormrage (who ultimately becomes the corrupted boss of the first WOW expansion pack The Burning Crusade).

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?