World of Warcraft patch 5.0.4 is now live. Mostly a balance and content patch, it includes a brand new talent system, new class changes and tweaks, changes to glyphs, a change to the achievement system, and changes to the looting system.
Combined with Mists of Pandaria, the brand new WoW expansion it certainly feels as if WoW has been updated for current generation gaming. To read a full list of changes, check out the official blizzard website.