Kotaku had an interview with one of the developers at Platinum Games and this came up during the interview.
AARON: Is there any possibility that Vanquish will get a PC version?
KOTAKU: It would be a good idea to release Vanquish on PC.
INABA: (smiling) Hrm. I wonder… If you stop recording, I can talk about that. (laughs)
This hints at the long rumored and requested port of Vanquish is coming to the PC in the future. It is a fantastic cover-shooter made by the man behind games like Resident Evil 4 and Evil Within.