While it’s known that Sony Bend is working on a PS4 exclusive, Sony has been keeping all details closely under wraps. The descriptions provided in many career opportunity ads have made many think that they’re working on a new Syphon Filter, but according to industry insider Shinobi602 who has proven to know quite a lot on what’s going on behind the scenes at several studios, that isn’t the case.
Update: Shinobi clarified afterwards that he meant that Sony Bend isn't working on Kill Strain. So it's still possible that they're working on Syphon Filter, but their title is not related to the KillStrain Trademark, and it's still something great.
The article has been changed to reflect the update and a change in headline has been requested to the moderators.