In a carefully worded announcement on Monday, Apple said John Giannandrea, who has been the company’s AI chief since 2018, is “stepping down” to, well, not work at Apple anymore. He’ll stick around through spring as an advisor.His replacement is Amar Subramanya, a highly regarded Microsoft executive who spent 16 years at Google, most recently leading engineering for the Gemini Assistant. It’s a savvy hire, given that Subramanya knows the competition intimately. The move is being characterized as a shake-up ...