Of course im joking but I wouldn't be to surprised, go fly up to the top of Karazhan there's already a portal and a possible flight point there.
Found it on the beta when i was looking around one day.
At first i thought it was probably old, but you cant get there from the ground you have to fly there.
I passed it off as maybe they left it there from a old cancelled project, but now with all the remade stuff Old Ironforge, ZA and ZG this has a little more weight to it.
Warcraft: Night of the dragon no reason Blizzard wouldn't do something similar here.
There's also the fact that Kara is really popular, and there's unexplored dungeon's and catacomb's though why would the entrance be up top? It's anyone's guess just a theory i have had since beta.
Wowpedia say's it been there? Yes it has but so has Old Ironforge.
Not saying its new or old im just saying that with all the remade stuff this xpac i wouldn't be surprised if we see this used in the future.
One more point and then i am done here, they took out allot of other old unused stuff (The unused parts of the cancelled Desolace BG, and Tauren farm behind silthus come to mind of unused stuff that was removed) with the world remake aka Cataclysm just a theory but why wasn't this removed.
Again who knows for sure just kinda odd is all.