WoW Burning Crusade Classic Update Adds Black Temple, Mount Hyjal Raids: Full Patch Notes
The patch also brings a new Arena season, Netherwing daily quests, and an optional Warlock pet.
Mount Hyjal Teron Gorefiend Illidan Stormrage Carendin Halgar Ashtongue Deathsworn Morogrim Tidewalker
Source: gamespot.com