In a word, no. Blizzard blue Nethaera posted in response to the umpteenth request for an Auction House in Shattrath. At least this time we got an explanation behind the decision.
Blizzard feels an AH in Shattrath will eliminate the only reason for players to interact with others in older cities. They reason players can use the Shatt portals to get to the AH in the older cities and then activate their hearthstone to get back to the Outlands.
This plan also spreads out the population. Anyone remember when their was only one AH for each faction? Ironforge was known as Lagforge. Think what would happen to your framerate should they put an Auction House in the Outlands capital. Yeah, not pretty.
Of course "not currently planned" doesn't mean "never." When the WotLK expansion launches and Dalaran becomes the player hub, they may reconsider. Until then, don't be getting friendly with any Innkeeper other than the ones in Shattrath, because your hearthstone setting isn't going to be changing for a long time. Unless you're a mage.