Tim Cook to step down as Apple CEO. In letter, describes 15 years of emails

NPR reports that Apple CEO Tim Cook, 65, will step down in September and transition to executive chairman, with John Ternus, Apple's head of hardware engineering, named as his successor. The announcement comes via a letter from Cook describing 15 years of work at Apple. This is a major leadership transition at one of the world's most valuable companies, and the reporting is corroborated across multiple major outlets (NYT, Guardian, Fox Business, and Apple's own statement), all confirming the September timeline and Ternus's appointment. The article demonstrates solid journalistic standards with a named byline (John Ruwitch) from a major national outlet, though the NPR metadata provided does not include the full article body, limiting assessment of the depth of sourcing or additional context about Ternus's qualifications and strategic implications of the transition. Watch for Apple's investor and analyst reactions in coming weeks, as well as details about how Ternus plans to lead the company's product strategy and competitive positioning against other tech giants.