DirectX 11.1 Not for Windows 7
Microsoft has confirmed that DirectX 11.1 will not be available for Windows 7 and will remain a Windows 8 exclusive.
The only difference so far that we have noticed is that DirectX 11.1 is able to bring native stereoscopic 3D support to games without developers having to program 3D with specific graphics cards in mind. This can only really be seen as a marketing plot by Microsoft to get gamers to buy into Windows 8 for the native stereoscopic 3D, right? Maybe Windows 7 doesn’t support it though, who knows? But all we know at the moment is that DirectX 11.1 won’t be available on Windows 7.