They've also updated the way search results display, ensuring that results display in order of page hits and relevant Wowhead guides are highlighted as well. In addition, there is now an option to further filter the tabbed results of a given search.
Lastly, and perhaps most excitingly, they've added subzone maps to their zone pages as well. As Perculia states, "Caves are really easy to get lost in." So they are, but maybe now they'll be a little less so, thanks to these new map options. In addition, there's also new information on fishing pools: where they spawn, and what you can get from them. You can check out the complete list of additions, and learn all the details on these new features, on Wowhead's announcement page.