Addendum:

>> Any support for iMac G5 with the ATI video card?

> https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=8981&forum=3&start=15

"From Friday 12th till Sunday the 14th of July 2013 the Amiga Club Osnabrück and the Amiga Club Steinfurt are celebrating another hardware meeting. So if you're interested in MorphOS you're welcome. Beside Pegasos systems we expect also Mac mini, PowerMac, iBooks, PowerMac G5, iMac G5 and of course Efikas."
http://www.geit.de/eng_index.html

Maybe this time? :-)