Phoronix: Huh, id Tech 5 Engine To Be Open-Source?

id Software has a long history of being friendly towards the Linux and open-source communities. id Software was an early game company to support the Linux platform and they have ported many titles to Linux, including their popular Enemy Territory: Quake Wars, Quake 4, and Doom 3 titles. Their in-house id Tech game engines have been compatible with Linux and provide an OpenGL renderer. After the game engines have reached the end of their market life, id Software has also open-sourced these engines for use by the free software community. But with id Tech 5 could id Software possibly be open-source to begin with? The web-site for the Rage game seems to imply that id Tech 5 is in fact open-source...

http://www.phoronix.com/vr.php?view=OTA3MA