We also have extensive coverage of patch 3.0.2. You can checkout our Tuesday morning maintenance post for the latest 3.0.2 happenings, or our Echos of Doom page for a nice catalog of everything. Don't forget to update your addons for this patch - we have a handy listing of quick download links for you.
Patch notes after the break!
Important Update: Blizzard has announced that this patch does not contain all the new class changes associated with Wrath of the Lich King.
Update 3:35 p.m. EDT: Blizzard has released patch notes on their main page. These notes now reflect the latest notes Blizzard has produced.