Since AmigaOS 4.1 is available on a new device, and it is being sold without word from the distributors that Amiga, Inc has threatened legal action against them, I would conclude that an agreement was reached for Amiga to allow Hyperion to continue with the release.
If I recall from a few years ago, AmigaOS4 was always planned on being a native PPC OS regardless, so at least that part has been completed. AmigaOS5 was supposed to be the next platform. ...