Blizzard posted the notes for the new patch today. All the details can be found in their article or on their site.
New World of Warcraft Patch!
The new World of Warcraft game-client update is now available and ready for download! Here are some of the changes in the patch:
Holiday Events: Some cool decorations and events have been included around the game world to celebrate the holidays
Maraudon: A new dungeon for levels 40-49 in Desolace
Cloak & Helm Graphics: You can now turn on or off cloak and helm graphics
Just log in to World of Warcraft to get the patch; the download process will start automatically. To see all the changes, read the complete patch notes! Thanks for your patience during the patch process...we'll see you in Azeroth!
PS: For those of you who are interested in seeing some of things we have planned for future patches, take a look at our recently posted Under Development page.
To read the latest guides, news, and features you can visit our World of Warcraft Game Page.