World of Warcraft will be taking its servers down for four hours tomorrow for maintenance and the application of the new 7.1 patch, bringing the return to a classic raid instance as a mythic dungeon, PvP changes, new pets and even an invasion of dinosaur falcons.
As far as the patch contents, players will be returning a Karazhan in Deadwind Pass, a popular World of Warcraft raid dungeon in the Burning Crusade.
Several bosses will be familiar, but the Opera has three new settings, and to new bosses will conclude the dungeon.
The Battle.net interface should have already started preloading the patch, so once the servers are back up, players will be able to jump right back in.