According to Wikipedia "Apple's Intel Transition was became public knowledge at the 2005 WWDC. Apple's initial press release indicated the transition would begin by June 2006, and finish by the end of 2007, but it actually proceeded much more quickly. The first generation Intel-based Macintoshes were released in January 2006 with Mac OS X 10.4.4 Tiger, and Steve Jobs announced the last models to switch in August 2006, with the Mac Pro available immediately and with the Intel Xserve available by October 2006.[2] The Xserve servers were available in December 2006.[3]
Apple released Mac OS X v10.6 "Snow Leopard" on August 28, 2009 as Intel-only, removing support for the PowerPC architecture. It is also the last Mac OS X version that supports PowerPC-based applications,[4] as Mac OS X v10.7 "Lion" dropped support for Rosetta on July 20, 2011."
So on June 22, 2020 Apple announces its transition to ARM. It will begin by June 2021 and finish in 2022 but the first ARM Macs will be released in Jan 2021 and the last ones in Dec 2021. Apple will release ARM-only macOS in Aug 2024 and drop support for Intel emulation in July 2026?
Apple released Mac OS X v10.6 "Snow Leopard" on August 28, 2009 as Intel-only, removing support for the PowerPC architecture. It is also the last Mac OS X version that supports PowerPC-based applications,[4] as Mac OS X v10.7 "Lion" dropped support for Rosetta on July 20, 2011."
So on June 22, 2020 Apple announces its transition to ARM. It will begin by June 2021 and finish in 2022 but the first ARM Macs will be released in Jan 2021 and the last ones in Dec 2021. Apple will release ARM-only macOS in Aug 2024 and drop support for Intel emulation in July 2026?