> I believe that Windows 9x support was dropped a long time ago. Switching to DirectX > 10 will kill support for Windows XP, which would piss off a LOT of people, so I don't > think that will happen any time soon.
Nah, it's possible to support both DX9 and DX10+, it's just XP users will likely not get future rendering-related features like HLSL 2.0 and hardware rendering for the 3D games.