Microsoft has confirmed that DirectX 11 would be included in Windows 7. In an excerpt:
“Microsofts Ben Basaric just told us that Windows 7 will, contrary to the rather vague statement a few days ago, be delivered with DirectX 11. Furthermore DX11 will also come for Windows Vista although Microsoft wouldn’t confirm, if this will coincide with the release of Service Pack 2 for Vista.”
When DirectX 10 was released it was not compatible with Windows XP; but now with DirectX 11, Microsoft is making every effort that it would be still be compatible with a previous operating system, Windows Vista.
