IMac OS Catalina 10.15.7 running. Due for an update, When will it be available?
IMac OS Catalina 10.15.7 running. Due for an update, When will it be available?
iMac 21.5″, macOS 10.15
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10.15.7 was the last version of Catalina but there were some later security releases, including to Safari. See: Apple security releases - Apple Support
However you may be able to upgrade to a version later than Catalina.
The model year of an iMac is available at Apple menu > About This Mac.
A late 2012 through late 2013 iMac can be upgraded to Catalina 10.15.7 but no later. See: How to download and install macOS - Apple Support
A mid 2014 and late 2014 iMac can be upgraded to the latest version of Big Sur macOS 11 but no later. See: How to download and install macOS - Apple Support
A late 2015 iMac can be upgraded to the latest version of Monterey macOS 12. See:How to download and install macOS - Apple Support
A 2017 or later iMac can be upgraded to the current version of Ventura macOS 13. See: How to upgrade to macOS Ventura - Apple Support