FiringSquad: We know that Unreal Engine 3 was largely developed with shader model 3.0 in mind, but do you plan on adding any DirectX 10 aspects into Unreal Engine 3 and ultimately Unreal Tournament 2007 or is that coming in UE4?
Tim Sweeney: Unreal Engine 3 will make full use of DirectX 10, and many of our and our partners' games will ship in 2007 with full support for DirectX 10 and Windows Vista. But, despite the marketing hype, DirectX 10 isn't all that different from DirectX 9, so you'll mainly see performance benefits on DirectX 10 rather than striking visual differences.
From http://www.firingsquad.com/hardware/dir ... s_preview/
