This is GREAT news! I no longer have a PowerMac G5, but I bet the iMac G5 support won't be too far along.
Kinda strange to hear they jumped over the iMac though in favor of PowerMac's based on the previous incarnations. Hmmm. Oh well. If/when iMac support becomes a reality, might just give me the excuse to turn my main computer into a MorphOS machine and purchase a shiny new 24" or 27" iMac