Where did you ever get the illusion that Amiga OS was in development for PS3?
He probably got it from the article on ARS Technia by OS4 advocate and wannabe journalist Jeremy Reimer where he claims it is being tested on PS3:
http://arstechnica.com/software/news/2008/09/amigaos41-ars.ars/5"A Hyperion developer told me that not only has the OS been run on a PS3, but they have even tested support for the seven SPU units in the Cell processor. "
