DX11 i vista? HD5870

A critical aspect that must be noted is that the new DirectX 11 package will only be available as a Platform Update for customers who have upgraded Windows Vista to Service Pack 2.

Users that are currently still running the RTM or SP1 versions of Vista will not be getting upgraded, unless they first upgrade to Service Pack 2. This is due to compatability issues with the older WDDM driver model used in RTM and SP1, while SP2 runs the same model WDDM as Windows 7.

The same is valid for Windows Server 2008, with only SP2 being supported for the DirectX upgrade introduced with the Platform Update for Windows Vista, and RTM-SP1 being ignored completely.

The DirectX 11 Platform Update will also be tailored into the new upcoming Service Pack 3 (SP3) for Vista and Windows Server 2008.