So we know the PS3 version is OpenGL and 360 version is using DirectX 9 but what about the PC version. Is it harnessing the latest in OpenGL or DIrectX11?

All I know is that it will not be DirectX11 because Carmack said there is no reason to use DX11 yet. He looked into it during the development of id Tech 5 and said he wont incorporate it into his engines until he sees a valid reason to.

John Carmack said that Rage will use DirectX 9 and OpenGL 3.0 changed!

Bone will not be DirectX 9 and OpenGL 3.0 standard will be modified according to the game.