If this is reference to AmigaOS from Hyperion, it should remain PPC. I see no financial reason for Hyperion to under take such a man power intensive project to port a OS that can never generate a profit. I don't think they have the number of Devs to do a port if they wanted to.
I don't see a reason for MOS to go x86 either for basically the same reasons.
If you want x86/PPC Amiga-like OS, it's called AROS which is being ported to Genesi's EFIKA-MX. You want to support it financially, go pick a bounty of your fancy and spend some meaningful money or buy a iMica or AresOne.
If someone developes a true next generation AmigaOS that isn't hobbled by 3.1 API, I may be interested in supporting that myself if there is some intelligent road map for it.