Edit: It's not like Apple has any (commercial) interest in working with the Linux kernel developers to ensure support/compatibility even if the M1 is ARM based.
Edit 2: Don't get me wrong, if Apple announces they will support Linux I'll run out the door and buy one now, as a MacOS user.
Edit 3: And this is a criticism against Apple running Intel x86 chips. Do you really think the M1 future is looking rosy for Linux?