https://arstechnica.com/gadgets/2020/06/apple-plans-to-announce-arm-transition-for-all-macs-at-wwdc-2020/

At its Worldwide Developers Conference (WWDC) later this month, Apple plans to announce the beginning of its transition from Intel-based Macs to ARM-based ones with internally designed CPUs, according to a report from Bloomberg. The report comes from Mark Gurman, who has had a generally good track record on reporting the internal workings of Apple and cites "people familiar with the plans."