I "updated" from GM2 to 10.12 yesterday (same build number, I know) and turned off prerelease in the App Store tab in system preferences.
Yet now MAS is showing me macOS 10.12.1b1.
Any idea what's going on?
For what it's worth, the following terminal command seems to have cleared whatever bits were stuck:
sudo defaults delete /Library/Preferences/com.apple.SoftwareUpdate CatalogURL
I think the official way to turn off beta seeds via terminal is the command line tool "softwareupdate".
You can see a list of avalable updates on you current catalog via:
softwareupdate --listReseting to the default one is done by:
sudo softwareupdate --clear-catalogI had the same problem and it solved it for me.
