There should be at least one mid-range machine coming out early, so that the developers have really a machine they can work on. Also, Apple needs to demonstrate

There should be at least one mid-range machine coming out early, so that the developers have really a machine they can work on. Also, Apple needs to demonstrate that they can make some powerful CPUs beyond what they do already for the iPhone and iPad. So the rumor of the smaller MB Pro sounds plausible, the 16" would be migrated in a second generation of Apple Silicon, likewise the large iMacs and the Mac Pro.