To my knowledge- and there's a LOT of people who would know better than I- Crimson Skies isn't in publication in any form, video or tabletop or otherwise, at the moment. I'm not sure who owns the rights at this point- it's a pity, because it's a really fun setting to play with, and the tabletop game (the original one, not the Clix one, which I never tried) was a blast.
I DO know that the CS Xbox game (High Road To Revenge, for the original Xbox) is backward-compatible on the Xbox One, if you need your fix sometime.