Its only the same situation that has happened to other architectures previously, there are lots of distributions that have silently dropped support for Alpha, Sparc (32 & 64), Itanium, and many others.
PPC in general is far more fortunate currently in having Yellow Dog, a distro that is dedicated to the architecture. Though I don't see them listing any support for any of the next gen Amigaish hardware.
In the future it may get to the situation faced by the Alpha community where part of the community ported Fedora Core to the alpha to have a up to date(ish) distro available for the platform.
Gaz
