I might be missing some examples but the last breaking change i remember was the deprecation of the 32bit support: https://www.gsmarena.com/arm_will_drop_32bit_

I might be missing some examples but the last breaking change i remember was the deprecation of the 32bit support: https://www.gsmarena.com/arm_will_drop_32bit_support_in_the_big_cortexa_cores_starting_in_2022-news-45688.php https://www.gsmarena.com/arm_will_drop_32bit_support_in_the_... I think ARM are clearly more comfortable breaking compatibility than Intel.