2K Czech, the creators of Mafia II have recently, are now looking for new co-workers with experience within the field of designing open world games. As well as it might be for a game not included in the Mafia series, it might just be for the upcoming Mafia III which 2K recently announced that they were working on. Perhaps it's a hint about what Mafia III will be like?
Thanks to user Lee James of the 2K official boards for posting the link. You can see James' post here: http://forums.2kgames.com/showthread.php?103558-2K-Czech-hiring-for-people-with-quot-open-world-gaming-quot-experience.-Mafia-3-reveal