However, this is not the first-first DirectX 10 demo that is available to the general public. First one is actually hosted on Nvidia's own nZone gaming site, which is something that leaves heads in question marks what did PR bunny team in US do... check your own site first, please.
The world's first DX10 app and demo is a The Way It's Meant To Be Played (or short, winner of competition "Make your own break-a-tounge acronym" - TWIMTBP) supported product, developed by TheGameCreators can tell you that it is named FPSCreator, and yes, it does require DX10 hardware to run.
As you can see in the screenshots down under, these are first DX10 apps out there, and no "artistic renderings" as Microsoft likes to show to every hack it can find. However, this does not make these two demos less impressive.
Nzone's first, world's first
Nvidia's "first", world's second
So, for your DirectX10 viewing pleasure, you can scroll down a bit and use our complementary l'inqs. But first, click to download latest ForceWare drivers for Windows Vista, either x86 or x64. ยต
L'INQS
ForceWare 100.64 for 32-bit Vista
ForceWare 100.64 for 64-bit Vista
World's first DX10 demo
World's SECOND and Nvidia's first DX10
demo