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by arnd 1849 days ago
M1 is Armv8.5-A, which is almost the same as Armv9.0-A, except that it lacks SVE2 vector instructions. Apple's CPUs tend to move to the latest architecture revision that is available at the time the instruction set gets nailed down, so the next generation (M2 and A15) would be Armv8.6-A if it lacks SVE2, or Armv9.1-A if it includes it.

Most likely the M2/A15 will include SVE2 but won't be available for another six months, while the M1+ in the coming Macbook Pro would still be Armv8.5-A.