Apple’s newly announced macOS Monterey at WWDC seems to have weakened its support for the old models. According to the official upgrade list, you need to have an iMac no earlier than 2015, iMac Pro 2017, MacBook Air early 2015, MacBook Pro early 2015, Mac Pro 2013, Mac mini 2014 or 2016 You can experience the new generation system only with the MacBook models at the beginning of the year.
The existing macOS Big Sur can be installed no earlier than the 2014 iMac, 2017 iMac Pro, 2013 MacBook Air, 2013 MacBook Pro, 2013 Mac Pro, 2014 Mac mini and 2015 On the MacBook of the year. In contrast, the scope of support for MBA and MBP has been reduced a bit. Considering that many of the “eliminated” models actually have hardware that is not inferior to the 2014 Mac mini, Apple’s decision is really a bit confusing.