I got an email from Apple:
Cheers
Ok, so this is no different than the GM then. (same e-mail went out to everyone for the GM).
Sorry guys...same story, duplicate thread.
https://forums.macrumors.com/thread...golden-master-to-public-beta-testers.1992996/
Edit: You
could wonder about the delta's between the Dev GM (319) vs the PB GM (320).
You had me thinking we were getting an updated bundle by calling it a release candidate (and yes, I know the headline of the e-mail said that), but they still called it a GM build in the text of the e-mail.
"We are pleased to give you access to the iOS 10 and macOS Sierra final release candidates. We will be shipping the final versions to customers worldwide in the coming weeks and appreciate you trying out the releases and providing feedback.
You can install the iOS 10 GM candidate from Software Update. And you can get a redemption code for the macOS Sierra GM candidate from
beta.apple.com and download it from the Mac App Store.
Thank you for participating in the Apple Beta Software Program and helping us make these releases our best yet."