Misleading update indicator for "macOS Version" info item on macOS 15.4

[gdarm]

On macOS 15.4 Beta 1 the info item "macOS Version" has an indicator for available software updates.

It's still there after restart, unload & load LaunchAgent, after force quitting the app and after check for new software updates.

[Alitejawi]

Same issue indeed.

macOS version: 15.4
macOS build: 24E5206s
Support App version: Version 2.6.1 (64)

[jordywitteman]

It appears the LastUpdatesAvailable value in /Library/Preferences/com.apple.SoftwareUpdate.plist is not properly updated or cleaned up after a software update check.

On a clean VM I couldn’t reproduce, because the key is not there. Not sure if Apple is going to remove support for this key. I filed feedback and hope to get an answer. If support for this key was intentionally removed, we’ll fix the issue by observing another value. I think it’s too soon to make that decision and wait for feedback response or beta 2/3/..

[mat-griffin]

Same issue for me.
On 15.4 but app showing update required.