Blizzard has shown their usual flair in naming these things, too; my favorites include:
The Achievements listing includes Feats of Strength, zero-point achievements that may be unachievable in the current game (like old honor system ranks), or at least unachievable by most people. Among these are several "server firsts", such as being the first on your server to reach level 80 with a given class, or the first to kill a given boss. It's nice to see that this information is going to be memorialized somewhere besides blogs and realm forums.
In other Wowhead news, talent calculators for the new Hunter pet talents are now available. Additionally, new weapons and armors now have 3D models viewable on the site (just click the "View in 3D" button on item pages), so you can check out what we'll all be seeing in a few short months. So far I haven't found anything that looks totally amazing, though I did come across something that looks rather like the walrus hat that Blizz seems to be fond of showing off in Death Knight promo pics.