Apple Making It Harder to Avoid Nagging macOS Update Notifications - MacRumors

With the release of macOS Catalina 10.15.5 and related security updates for macOS Mojave and High Sierra earlier this week, Apple is making it more difficult for users to ignore available software updates and remain on their current operating system versions.

Included in the release notes for macOS Catalina 10.15.5 is the following:.

This change also affects macOS Mojave and macOS High Sierra after installing Security Update 2020-003.

For users still running an earlier major macOS version like Mojave or High Sierra, the Software Update pane in System Preferences typically displays a prominent upgrade button for Catalina and a notification badge on the System Preferences icon in the Dock, but until now knowledgeable users have been able to hide those items by using the softwareupdate --ignore "macOS Catalina" command in the Terminal app.