Windows 8 has an updated DirectX 11.1 that supports Direct3D 11.1, DXGI 1.2 and the revised Windows Imaging Component. There were previous official claims that the new PC gaming technology in DirectX 11 is available for Windows 8 devices but to make things inaccurately fair enough, there are some backported features of DirectX 11 for Windows 7 and its server variant under Platform Update for Service Pack 1 that is included with Internet Explorer 10 Release Preview for Windows 7. In addition, you can get this update for Windows 7.
However, there are some DirectX elements that depend on WDDM 1.2 drivers and the new Windows Store app APIs in which they won’t be available on Windows 7. Maybe things are much smoother like that on Windows 8 but another improvement includes the fixes of decoding of 96bpp floating-point TIFF images. So for Windows 7 users, you can obtain this update and start photo-shopping straight away and save the pictures as TIFF files for technological improvement.