Patch 2.2.2 went live on October 2, 2007. It introduced a new holiday known as Brewfest, and also changes to the Hallow's End event.
General
Brewfest has begun and members of the Horde and Alliance can enjoy a multitude of activities, quests, items, and even Ram Racing. As Brewfest is about beer and food, revelers can sample the best beverages available in the world.
Hallow's End: Observed by both the Horde and the Alliance, Hallow's End is the celebration of the break between the Forsaken and the Scourge. Adventurers can speak to innkeepers to get silly masks to wear during their adventures, and much more. This is just one way to celebrate Hallow's End.
New Holiday World Event: The Headless Horseman has been seen terrorizing local villages.