Apple has released macOS Sierra 10.12.1 beta to developers for testing. The build number is 16B2327e.
The macOS Sierra 10.12.1 update improves the stability, compatibility, and security of your Mac.
You can install this update using the MacOS Sierra Developer Beta Access Utility:
• If you have already installed the new "MacOS Sierra Developer Beta Access Utility", choose
"Software Update" from the Apple menu. Otherwise, proceed with the following steps.
• Log into your Apple Developer account and download the "MacOS Sierra Developer Beta Access Utility".
• After running the installer, the Mac App Store will open automatically. Click on the Updates panel and the latest version of macOS seed will now be available for download.
• When a newer seed build is available, you will receive a notification to update from the Mac App
Store. Click the notification to begin the installation. New seed notes will be posted in the Mac
Dev Center.
• To stop receiving new seed builds, go to the App Store in System Preferences and where it says "Your computer is set to receive pre-release Software Update seeds", click on the "Change..."
button.
You can download the Sierra Developer Beta Access Utility from the link below...
Download
The macOS Sierra 10.12.1 update improves the stability, compatibility, and security of your Mac.
You can install this update using the MacOS Sierra Developer Beta Access Utility:
• If you have already installed the new "MacOS Sierra Developer Beta Access Utility", choose
"Software Update" from the Apple menu. Otherwise, proceed with the following steps.
• Log into your Apple Developer account and download the "MacOS Sierra Developer Beta Access Utility".
• After running the installer, the Mac App Store will open automatically. Click on the Updates panel and the latest version of macOS seed will now be available for download.
• When a newer seed build is available, you will receive a notification to update from the Mac App
Store. Click the notification to begin the installation. New seed notes will be posted in the Mac
Dev Center.
• To stop receiving new seed builds, go to the App Store in System Preferences and where it says "Your computer is set to receive pre-release Software Update seeds", click on the "Change..."
button.
You can download the Sierra Developer Beta Access Utility from the link below...
Download