My problem with that is, Apple doesn’t offer upgrade paths from n-2 to n-1.
You need to either remember to upgrade before the next major release comes out, or stockpile the installation image before it’s gone from System Preferences.
Fail to do either, and you’re effectively forced to upgrade to the just-released version against your will.
You need to either remember to upgrade before the next major release comes out, or stockpile the installation image before it’s gone from System Preferences.
Fail to do either, and you’re effectively forced to upgrade to the just-released version against your will.