It’s pretty awesome.
3.0 is the last version that is stable(ish). Naturally the MacOS installer won’t run so a bunch of Unix legwork is required.
I’m not sure if this email will make the list but I’ll try....
Anyway the developer of Shoebill got snapped up by a certain fruit vendor so no updates...
As for A/UX it’s SYSV with the c and fortran compilers built in. Apparently it was going to be Steve’s “Big Mac” project that was sidelined after he was pushed out. Although there is so many crazy rumours of that window at the end of Apple and the start of NeXT.