Caydiem has previewed some of the upcoming 1.7 Patch content. Currently this "preview" includes 3 items of note as listed in her post.

If you're interested in reading through the major features coming up in the next patch, wonder no more... all three previews are now up for your perusal!

http://www.worldofwarcraft.com/info/underdev/arathi.html

http://www.worldofwarcraft.com/info/underdev/zulgurub.html

http://www.worldofwarcraft.com/info/underdev/fishing.html