Apple’s 26 Public Betas are now out, marking another major milestone on the road to their release this fall. While all the social-media discourse has been about Apple’s new “Liquid Glass” design, that talk obscures some of Apple’s other interesting choices in this year’s operating system cycle. While Apple would probably insist (like a proud parent) that it doesn’t have favorites among its platforms, the choices Apple has made in this cycle say an awful lot about the company’s...