Cataclysm - Heroic Zul'Gurub Dungeon and Boss Guide
Jesse Cox from OMFGcata released a nice video of the updated version of Zul'gurub. If you didn't have time to visit the new instance on PTRs, you should probably spend 15 minutes watching it, you will probably end up thinking "hey, the new ZG is better than I thought!".
Patch 4.1: Addon Messages Will Be Filtered
Boring stuff you will probably not understand unless you're an addon developer, but it seems important!
Originally Posted by Blizzard Entertainment
Blizzard Art Gallery Update
The World of Warcraft: Wrath of the Lich King Art Gallery has been updated with four pieces representing the Warcraft universe.
New Warcraft Fan Art
The Blizzard Fan Art Section has been updated with ten new pieces of fan artwork set within the Warcraft universe.