Sure Apple seems to be using the M1 in across every price segment for their products, but M1 is also literally the first iteration of their shift to running macOS on ARM and not x86 architecture. This mass push mainly serves to speed up the transition.
No doubt there'll be a higher performing SOC for Apple's Pro lineup such as Mac Pro, Macbook Pro. History has confirmed this since Apple developed the A*X chips specifically for the Pro lineup of iPads. Main question is, how many concurrent SOCs will Apple maintain? Just 2 as they've done for the iPhone & iPad Pro divide or potentially more?