Arkham City Facebook Pages Teases DLC?

A new image surfacing on the Arkham City Facebook page could be a possible tease for the recently rumored Harley Quinn DLC.

[rajman]

HHH?

[rajman]

HHH?
edit: oh damn double post by mistake, some mod plz delete this comment

[Imikida]

Sounds cool, should give me a reason to go back to arkham city.

[LtSkittles]

It's Harley's Revenge dlc Robin is the main character I believe.