So, roughly 70% are running Catalina or later. This is pretty good. Macbooks do usually get software updates for many years - as do iPhones and iPads of late.

So, roughly 70% are running Catalina or later. This is pretty good. Macbooks do usually get software updates for many years - as do iPhones and iPads of late. People who bought early Apple Watches (some of which were very expensive!) didn't get updates past watchOS 4 however, which was sad to see.