If Doom 4 is already in production then it has probably been offloaded to Raven or some other studio. id is supposed to be working on a new IP, I can't remember the name but they used assets from the new game in their Tech5 engine demo.
EDIT: Wikipedia says the game I was talking about is called "Rage", but it also says that id is developing both Rage and Doom 4 internally.
They are actively recruiting people to work on Doom 4.
^ and it's gonna be OpenGl. There a difference between opengl and directx?
DirectX is a collections of API
with only Direct3d (the same goes for Opengl) as a Graphical API.
the rest of the API in directx are for inputs/sounds/music/network etc etc
All of id's engines starting with Tech2 (the Quake 2 engine) are OpenGL based, so no difference there.
Originally Posted by bipolargraph