The World of Warcraft Website has a list of changes in a new hotfix to address issues in the recent Shattering of Azeroth version Patch 4.0.3a patch for World of Warcraft that paved the way for the new Cataclysm expansion for Blizzard's MMORPG. Word is: "While many have already been deployed on all realms, some may not be implemented until the next time your realm is restarted." Thanks Ant.