Hyperion still refused to release OS4 for Pegasos/Mac/RS6000.
SighHyperion is not refusing to release OS 4 for the Pegasos. The situation is a bit more complicated than that.
RS6000? You must be kidding. How many RS6000 users are out there, and how many of them will actually want to buy an AmigaOS?
Would it be technically posible for OS4 for be compiled for 68k and used with a 68k JIT emulator as it's all written in C.
There are PPC assembly parts, around 34000 lines. Most of the system already is, or will be, PPC, so a 68k emulator (JIT or whatever) will not exactly help you.