The Darwin 8.0.1 Installer CD has been released by Apple here.
OpenDarwin is providing a download of the image:
For PowerPC:
http://www.opendarwin.org/downloads/8.0.1/darwinppc-801.cdr.gz
MD5 (darwinppc-801.cdr.gz) = fe85def148896f76b00a753687d99144
For x86:
http://www.opendarwin.org/downloads/8.0.1/darwinx86-801.iso.gz
MD5 (darwinx86-801.iso.gz) = dbd260dda994093a11c31afbe624aa34
For more information, please see the Release Notes at:
http://www.opendarwin.org/downloads/8.0.1/release-notes-8.0.1.txt