domU image for x86_64 machines?

Is there any NetBSD domU image for x86_64 machines?

If not, can i386 domU image work on x86_64 system? (Sorry if
this is a 
FAQ.)

I saw an email from July about that it was needed to be
done.

I didn't see it on the NetBSD-daily download site.

  Jeremy C. Reed