We've know for a while that Valve have been experimenting with virtual reality technology similar to the much-publicised Oculus Rift. Now it seems Valve are finally ready to talk about it. They are scheduled to give two talks at this year's Game Developer's conference in late March. The first talk is being given by Joe Ludwig and is entitled What We Learned Porting Team Fortress 2 to Virtual Reality and will discuss how Valve dealt with various issues involved integrating Team Fortress 2 with virtual reality including "rendering 2D user interface in a 90 degree field of view display" and "how mouselook can interact with head tracking in a first person shooter." The talk will also discuss how to avoid these problems if designing a game to work with virtual reality from the ground up. The second talk is from Michael Abrash (who you may recognised as the writer of the Ramblings in Valve Time blog) called Why Virtual Reality is Hard (And Where it Might be Going) which will give a more general overview of virtual and augmented reality and what Michael thinks the roadmap is for these technologies is. Both these talks should be very enlightening as to Valve's current thoughts on virtual reality and if we can expect Oculus Rift support in Source engine games or the Steam Box platform.