DCUC Wonder Twins?! (updated)

Here’s an odd thing that popped up on a CARS blog

[Pics removed at Mattel’s request.]

Absolutely nothing has been confirmed yet. This could be a custom. But…could the Wonder Twins be this year’s SDCC exclusive? Or perhaps a Mattycollector.com two-pack?

(Thanks to graznador at the Fwoosh for pointing this out.)