No, this is not another question on how will be Linux version 
Just stumbled on one short info that there is studio porting games to Linux, with some experience:
thx to root.cz
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Totally possible since CryEngine 3 can cook builds for Linux.
This would be a great advertisment for Linux gaming as well, since a lot of AAA are now supported like Metro, Hitman, Arma III etc
As of now it’s not possible since you guys use DX11, but using Vulkan API would rock each platform in a sweet way.
Good luck with the development, and take confidence in Feral. I like their port of Hitman. Dunno about other of their ports though