If I remember someone used Asphyre on Vista, but I can't remember whom. That's mostly just Delphi version and not library specific; same for win64. So they should work there.

Considering that Yuriy is working to make games, Asphyre, and documentation I say cut him some slack there. Not to mention the total, from-the-ground-up rewrite changes a whole bunch of things that have to be documented.