Well folks, looks like our Gx PPC machines will be Unsupported sometime in the early 2020's.
They had a good run.
PowerPC Macs are only unsupported by this particular distro of Linux. I've installed older Linux on PowerPC Macs and it's okay, but I ended up going back to last supported versions of Mac OS X. By the early 2020's who knows what we'll be running. I think there is room for a mix of retro and new. Seeing that Apple is focused more on the iPhone than Macs, many are sadly looking to Linux running on albeit cheaper laptops.