> The new approach calls for Apple's development teams to ensure that test versions, known as “daily builds,” of future software updates disable unfinished or buggy features by default. Testers will then have the option to selectively enable those features, via a new internal process and settings menu dubbed Flags, allowing them to isolate the impact of each individual addition on the system.

Uh, I'm not very confident on this helping; wouldn't this mean fewer people will be using and evaluating beta components?

> Apple privately considered iOS 13.1 the “actual public release” with a quality level matching iOS 12.

It certainly didn't reach that quality level…