The incredible people who brought ioquake3 engine have already started working on a new project - iodoom3. Many popular Linux games like Open Arena and Urban Terror are based on ioquake3 engine. With starting of iodoom3 project we will see more games coming to Linux in future that will be able to utilize high end features of id Tech 4 engine.
Just like what was done with Quake 3's source code, Doom 3 source code will be polished and new features and fixes will be introduced. A look at its roadmap:
- To add SDL for portability on input handling and window management
- Cmake for building
- Cleaning up compile-time errors
- 64bit support
- Installers for the top three platforms (Windows, Mac, Linux)
A WIP wiki page has already been set. Check it out if you want to know more.