https://techcrunch.com/2023/06/12/apple-m2-ultra-mac-studio-same-shell-far-more-firepower/

“This completes the transition to Apple silicon,” Senior Vice President of Hardware Engineering John Ternus noted during last week’s WWDC keynote. Apple never promised the process would happen overnight.

At the 2020 event, CEO Tim Cook promised a two-year transitionary period. The company missed the deadline by a year, but a lot has happened during that time, not the least of which was a global supply chain grounding to a halt. That’ll adjust a timeline or two.