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Apple Seeds Third Beta of macOS Sierra 10.12.3 to Developers

Apple today seeded the third beta of an upcoming macOS Sierra 10.12.3 update to developers, three weeks after seeding the second 10.12.3 beta and almost a month after releasing macOS Sierra 10.12.2, the second update to the macOS Sierra operating system.

The macOS Sierra 10.12.3 update is available for download through the Apple Developer Center or through the software update mechanism in the Mac App Store.

macos-10-12-3-beta
According to Apple's release notes, the 10.12.3 update "improves the stability, compatibility, and security of your Mac." No specific changes, bug fixes, or feature additions were discovered in the first two betas, but we'll update this post should any new features be found in the third beta.

Oftentimes, with bug fixes, it's hard to tell what's included until Apple supplies detailed release notes with a release. The previous update, macOS 10.12.2, introduced several important bug fixes to resolve battery life issues, fix graphics problems, and more.

Available since September, macOS Sierra is the latest Mac operating system. It includes Siri support, Apple Pay for the web, Universal Clipboard, Apple Watch auto unlocking, improved iCloud Drive integration, Picture-in-Picture multitasking, and dozens of smaller features that can be found in our macOS Sierra roundup.

Update: The third public beta is also available.

Related Roundup: macOS Sierra


Top Rated Comments

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7 weeks ago
Bring back the estimated time left on the battery.. the removal of that was such a troll move by Apple.
Rating: 8 Votes
7 weeks ago
Version 16D25a


Edit: Seems like all AMD drivers have been updated, Modification Date on all is 06-01-2017.

Edit 2: Dug a bit deeper, all Graphic Drivers are updated, including AMD, Intel and Geforce.
Rating: 7 Votes
7 weeks ago
Cue the normal whining regarding stability. Those who signed up to the Beta programme only have themselves to blame if their system is unstable.

Me I don't run a new release of OS X (macOS) until the .4 release hence the reason I am still running OS X 10.11.6 El Capitan.

Stability is no trade off for new features.
Rating: 4 Votes
7 weeks ago
Allow Siri to control my Philips Hue lights via my Mac. Also hurry up and come out with a device to compete with Amazon Alexa and Google Home
Rating: 3 Votes
7 weeks ago

Beta train! Chugga-chugga-chugga-chugga, woot! Woot!

(I can't install the beta anymore after reinstalling macOS from scratch last week. The beta enablement tool on developer.apple.com doesn't appear to work for some reason.)


That's why Sierra itself feels like it's a beta.
Rating: 3 Votes
7 weeks ago
Beta train! Chugga-chugga-chugga-chugga, woot! Woot!

(I can't install the beta anymore after reinstalling macOS from scratch last week. The beta enablement tool on developer.apple.com doesn't appear to work for some reason.)
Rating: 3 Votes
7 weeks ago
Public Beta is available, too.
Rating: 2 Votes
7 weeks ago
If any of you use Better Touch Tool (which is amazing), a new update just added a time remaining (and clock) widget for the touch bar. Super useful.
Rating: 2 Votes
7 weeks ago
According to someone who commented in another thread on here, this beta 3 also fixes the majority of the issues that came up since Sierra was released with the revamped PDFKit breaking apps that try to access Preview as a document viewer, or causing Preview to damage/lose OCR data embedded in your existing PDF documents when you use it to edit and re-save them.
Rating: 2 Votes
7 weeks ago

If any of you use Better Touch Tool (which is amazing), a new update just added a time remaining (and clock) widget for the touch bar. Super useful.

I think the developer of BetterTouchTool is the fastest and hardest working dev ever
Rating: 2 Votes

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