Last week, Apple released the GM seed of macOS Sierra, build 16A319, to developers to install and test, ahead of the September 20th public release date. The following day, public beta testers also got their hands on this GM (golden master) release, which typically is the final build.
Today, Apple has released yet another macOS 10.12 GM seed, build version 16A323, for developers:
No word on what’s new in this build, aside from the probable minor bug fixes and performance improvements.
When macOS Sierra launches publicly next week, be sure to backup your system before updating, or better yet, wait a couple days to see if there are any update bugs–like what some experienced with iOS 10.0.1. (including ourselves).