2K Marin is apparently at work on a new intellectual property alongside its shooter reboot of XCOM. Though details are sparse, an employee resume refers to being in the thick of pre-production stages of the unannounced title.
The resume from Supererogatory is for the Art Director on a small, five-person team currently at work on the new IP. At the moment, the work involves creating and managing concept art, evaluating middleware, building prototypes, and preparing pitches to publishing companies.
It's not unusual for a development studio to juggle multiple projects at once, at different stages of development. Since XCOM is due in fiscal 2013, this move would likely position the company to be ready once it ships to roll right onto its next project.