Where is this pink dragon?

[Akujiki]

That model doesn't have a very "Asian" look to it so I doubt they will give it to us as a mount in MoP.

[Fumu]

I'm glad they replaced that with a Netherdrake, just because Netherdrakes have lorewise been so out there that it's nice to see the devs go "a source for nether energies...oh yeahhhhh THOSE dragons exist!"

That being said, I'd rather see this one drop from Ultraxion than that hideous highlighter pink Gyth reskin.

[checking facts]

that doesn't appear to be a new model. it looks like a normal drake model with a "camouflage-like" effect on it.

[Darnassian]

I assumed that was the alpha version of Atramedes but looking closely at the room it definitely looks like Corla's and there's a netherdrake hanging from chains there now