Courtesy of IGoD on Scrolls of Lore.
http://ptr.wowdb.com/quests/33000-saurfang-warrior
Sends you to see Saurfang in Razor Hill. Reading the quest that happen before it, this could either be the next part of the Legendary (faction specific by the looks of it), or, i hope to god, a warrior questline.
So guess I was wrong. Looks like Saurfang will survive MoP.