http://www.ocforums.com/showthread.php?t=488723&highlight=DX10+XP
A recent discovery though, was the only major (tech) think stopping DX10 from from XP was the fact that virtulization was built into DX10. Nvidia couldn't support this feature with its hardware, now virtulization isn't required, its optional. So no major code rewrite would be need to XP's kernel. All M$ has to do is realease it for download liek the latest DX9 is.
The only issue I have with the alky project is, A) so far no mention of anything new except for it's being released soon. B) They will charge you.
I'd rather the developers put what they've gain into the WINE project..which you might be interested to know will also be porting DX10 to XP, after DX10 is implemented.
Although as anyone who uses WINE knows, DX9 isn't even fully implemented yet, mainly SM3.0..The intial work for DX10 has been started though..
So all in all, looks great, but I want to see it working (and not with the preview, SDK's). When an actual game engine works on it, then I'll be happy..