According to a job posting on Crytek's site, CryEngine 3 may be coming to Linux.
Crytek is hiring a Linux programmer via their Frankfurt office. The posting states the following: "The CryENGINE team is looking for a Programmer to work on the Linux version of the 3d engine.
- Maintain Linux support for CryENGINE.
- Contribute to maintenance and improvements of low-level engine systems.
- Ensure reliability of Unix based build systems for SDK releases and special projects."
Crytek's CryEngine 3, besides currently being used to develop the company's own games like Ryse and Warface, it is also being used to develop games like Cloud Imperium's Star Citizen and Undead Lab's State of Decay.