Found a way to purchase 2012 Turkey in the Platinum store.

[Lust]

I doubt you're supposed to be able to buy 2012 Turkey still, so I'm assuming it's a bug- the way it works is you have to find the advert for the RIVET pet, the one that says, "Explore the Depths of Space with a RIVET BUDDY ROBOT Only 500 Platinum!" When you click on the Advert it takes you to the Pets section of the Platinum store like normal, with the exception that the 2012 Turkey is there. It's been there everytime I've done this and I've tried it on multiple devices.

[Lust]

Here is a screenshot of the Advert that takes you to the Turkey, and another of me with the Turkey wearing Elite Team 6 to show that this wasn't taken in the past. (If there is no screenshots that's 'cause I failed to attach them, sorry.)

[FluidShot]

Nice Find :)
Confirmed for me too.

[Swede]

Removed with the next patch, thanks!