Do we know that Boot Camp isn’t supported by Big Sur? Or is it just that one can’t run an x86 OS on an ARM architecture? In other words - will I still be able to dual-boot into something like ARM-flavored Linux?
one can’t run an x86 OS on an ARM architecture
“Microsoft only licenses Windows 10 on ARM to OEMs. We have nothing further to share at this time.” [1]
“We’re not direct booting an alternate operating system,” says Craig Federighi, Apple’s senior vice president of software engineering. “Purely virtualization is the route. These hypervisors can be very efficient, so the need to direct boot shouldn’t really be the concern.” [1]
I have no idea what plans they might have but I would be surprised if you couldn’t install some ARM Linux distros on their laptops sometime next year.