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As part of this process, the campus will be approving new versions of macOS in a much quicker manner. The reason for this is that Apple has confirmed that only the current version of macOS will be receiving full security updates now. The plan will be to determine the best windows of time for an upgrade of campus Macs and having a Self Service policy for the major version upgrade. This would be enforced similarly to the updates, with a deferral window and a fixed date and time that it must be upgraded by.
From the point that an upgrade becomes available for the campus (90 days after release), it will be advertised if your device is eligible. Since Apple supports the current and previous two releases with security updates, you might see the macOS upgrade when nudged to update your Mac. To update without upgrading to the latest version of macOS, follow the directions at this link.
For users with specialty software that often has issues with new major versions of macOS right after launch, a deferred group will be created in our macOS management system. This will then be granted a further extension on when the OS must be upgraded, however that will not be a permanent extension. Specifics will be detailed once the upgrade window(s) are determined.