"macOS Sonoma: Enhanced Updates, Password Manager, Public Beta Features, and iCloud Keychain Integration"

Data analysis of Mac models reveals that Intel Macs released between 2009 and 2015 can expect to receive seven or eight years of macOS updates, while those released in 2016 and 2017 will receive about six years. This marks a two-year drop compared to earlier Macs. Although the last Intel Macs will still receive longer support than the last PowerPC Macs, they will have fewer years of software update support than any other Macs released in the past 15 years. The future of the remaining Intel Macs suggests they may only have a year or two of macOS updates left.