Well like all current Intel Macs the Mac Pro already includes both an ARM64 Apple Silicon SoC and an Intel CPU. Admittedly, the ARM64 SoC is the A10 based T2 rather than an M1 and it has not been without issues.What I think would be an interesting concept for a Mac Pro would be to include both an M1 based chip and an intel chip in the same computer. The OS could run on the M1 and could use the intel chip to execute applications that are x86 specific. Best of both worlds. There are a lot of challenges with doing this though so I doubt it will happen. Would be cool though.