The World of Warcraft community site has been updated with the news that the first Mists of Pandaria raid, Mogu’shan Vaults, will be opening in stages throughout the month of October and into early November.
Here is the current schedule for these Raid releases:
Tuesday, Oct. 2 - Normal Mogu’shan Vaults
Tueday, Oct 9 - Heroic Mogu'shan Vaults and first half of Mogu'shan Vaults on Raid Finder
Tuesday Oct. 16 - Second half of Mogu'shan Vaults on Raid Finder
Tuesday, Oct. 30 - Normal Heart of Fear and Normal Terrace of Endless Spring (Must clear Heart of Fear first) with Heroic and Raid finder versions unlocking one week later
Read more on the World of Warcraft community site.