Since we already have AOS4 and MorphOS, I'm not sure about the point of this question. PPC has been a part of our future for quite a while.
Everyone needs to get over the Amiga name. "Amiga" is just a trademark. Soon we're likely to have X86 "Amigas" that won't be able to run AmigaOS (just AROS, Windows, or Linux). That's the future whether we like it or not.
As to future platforms for those of us still hanging on, since they're already available what are we debating here?
