I have recently bought a Canon EOS6D and my raw photos will not open in my version of photoshop, which is cs5.1. I have looked at the camera types photoshop cs5.1 camera raw covers, and my camera isn't included. Is there anything I can do to open my raw images?! Or will I have to update my version of photoshop?
Support for the Canon EOS 6D first arrived in Camera Raw 7.3 - only Photoshop CS6+ is compatible with Raw 7.3
You have two choices
You'd have to ask Adobe to be sure, but I doubt that they'll offer you anything for free now that you've waited this long after the release of Photoshop CS6. But definitely ask.
This page gives info on upgrades: