And that is pretty exciting. So what might be going down in Dustwallow? Jaina Proudmoore is there in Theramore, and of course she's got some old ties to Arthas, so something might be happening in that vein. Onyxia has taken residence in Dustwallow (when she's not masquerading in Stormwind), and we've also heard rumblings in Outland that Deathwing may be making an appearance in either Azeroth (or Northrend) soon. And Dustwallow is also very near to Alcaz Island, which used to be where a certain missing King was previously seen ingame. Or it could be something completely new, of course, that we haven't even heard of yet.
At any rate, it's cool to hear that midlevel content is coming, even if it's in a pretty unexpected place (still no Heroic Deadmines plans?). Get ready to go back to Dustwallow Marsh.