At power.org (title link) you can now find the PegasosPPC design download page. The complete design and compenent listing of the PegasosPPC mainboard will be available on January 9th, 2006. To have access to it you have to be a member of Power.org.
Also an gallery from the Genesi presentation at the Power.org Venture Capital Symposium in Palo Alto, CA is now available.