Oh my god, maroon1 has just said something, and I'm agreeing with it 100%
Yeah, when you compare screenshots of DirectX 10 games using DirectX 10 vs DirectX 9.0c, you almost never see an actual difference, unless you look REALLY hard.
but, seeing as how Windows 7 is much better liked in general than Vista on release, perhaps it might be what DirectX 11 needs to take off.