Why is publisher 2K International teasing a still from BioShock on its official Twitter account?

The company uploaded the photo earlier today alongside one decidedly obtuse comment: "#discuss." On the official 2K United Kingdom account, the same image is teased alongside the comment "Oooo, what COULD this mean?!"

Oooo, what COULD this mean?! pic.twitter.com/P93Nl643SU — 2K United Kingdom (@2KInternational) July 24, 2014

But so far no clues are being offered up. The image itself is an in-game advertisement that comes from an exotic dancing venue in BioShock's Fort Frolic known as Eve's Garden. That area can also be found in BioShock 2's multiplayer.

Series creator Ken Levine noted earlier in the month that BioShock isn't likely to launch on PS Vita, despite initial efforts. At the time, Levine tweeted that Sony and 2K Games couldn't put a deal together when he "last checked" and that the two companies "seemed way more optimistic about this back in 2011." He added that he wished he could undertake the project himself "but lawyers and all that. I still love my Vita."