Impact of the change on users:

Starting April 15, Users running macOS 13 will receive the following pop-up message:

This Mason-Managed Mac is running macOS 13 and needs to be upgraded.

To upgrade by yourself go to  > System Preferences > Software Update.

You can defer to a later time using the dropdown menu. Please save anything you are working on!

IMPORTANT: This upgrade will require a restart.

Reason for the change:

Support for macOS 13 ends in the fall. (ID # 584658)