Blizzard has updated the Ulduar Announcement News Post with an additional section regarding Vault of Archavon. Vault of Archavon will be updated with Emalon the Storm Watcher during the week of January 23rd.
Available Starting the Week of January 23
New Vault of Archavon Boss
Emalon the Storm Watcher will challenge all who dare enter the east wing of Vault of Archavon raid in Wintergrasp.