It doesn’t seem all that long ago when Microsoft first started talking about what DirectX 10 would bring to game development. In fact, it was less than two years ago when we described the new pipeline and since then we’ve had a couple of generations of hardware from both AMD and Nvidia.
Link: http://www.bit-tech.net/bits/2008/09/17/directx-11-a-look-at-what-s-coming/1