In an interview on videogamer.com, STFU (360, PS3) producer Cameron Suey, explains why PC users were ignored on this release, and that LukickAss isn't abandoning the platform.
VideoGamer.com: Do you guys have any message to your PC-owning fans, because you guys have a heritage on PC?Read the whole thing here.
CS: Absolutely. We started on the PC. Unfortunately that goes back to the point of such a variance of the platform. There wasn't such a variance at that time and it made a lot more sense to develop on PC. The message is that we're not shutting the door on PC at all. Just for this project it happens to be that we don't have a PC SKU. I really hope that everyone can experience this game on a platform eventually.
VideoGamer.com: Might there be a PC version in the future?
CS: No.
Source: videogamer.com