Patch 4.2 is, as the numbering implies, the second major content patch for World of Warcraft: Cataclysm. It is the first patch to add a new tier of raiding this expansion, and it also adds a new daily quest hub and countless class changes.
This patch has been on the PTR for nearly two months, but it will very soon be coming to a live realm near you. Be prepared! The most up-to-date version of the patch notes you'll find are behind the cut below.
Keep an eye on WoW Insider throughout today's maintenance for more information on how to prepare yourself for patch 4.2!