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 Forum: macOS Sierra

Popular Stories

iPhone SE 4 Thumb 1

iPhone SE 4 With Apple's Own 5G Modem 'Confirmed' to Launch in March

Tuesday November 19, 2024 12:12 pm PST by
Barclays analyst Tom O'Malley and his colleagues recently traveled to Asia to meet with various electronics manufacturers and suppliers. In a research note this week, outlining key takeaways from the trip, the analysts said they have "confirmed" that a fourth-generation iPhone SE with an Apple-designed 5G modem is slated to launch towards the end of the first quarter next year. In line with previo...
airtag purple

AirTag 2 Rumored to Launch Next Year With These New Features

Sunday November 17, 2024 5:18 am PST by
Apple released the AirTag in April 2021, so it is now three over and a half years old. While the AirTag has not received any hardware updates since then, a new version of the item tracking accessory is rumored to be in development. Below, we recap rumors about a second-generation AirTag. Timing Apple is aiming to release a new AirTag in mid-2025, according to Bloomberg's Mark Gurman....
at t turbo indicator iphone 16 pro max v0 8hrh7w5f3w1e1

AT&T Turbo Indicator Showing Up in iPhone Status Bar for Subscribers

Wednesday November 20, 2024 3:42 am PST by
AT&T has begun displaying "Turbo" in the iPhone carrier label for customers subscribed to its premium network prioritization service, according to reports on Reddit. The new indicator seems to have started appearing after users updated to iOS 18.1.1, but that could be just coincidence. Image credit: Reddit user No_Highlight7476 The Turbo feature provides enhanced network performance through ...
Generic iOS 18 Feature Real Mock

Apple Releases iOS 18.1.1 and iPadOS 18.1.1 With Security Fixes

Tuesday November 19, 2024 10:10 am PST by
Apple today released iOS 18.1.1 and iPadOS 18.1.1, minor updates to the iOS 18 and iPadOS 18 operating systems that debuted earlier in September. iOS 18.1.1 and iPadOS 18.1.1 come three weeks after the launch of iOS 18.1. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. Apple has also released iOS 17.7.2 for...
Magic Mouse Next to Keyboard

No, Apple CEO Tim Cook Didn't Say He Prefers Logitech's MX Master 3 Over the Magic Mouse

Sunday November 17, 2024 3:03 pm PST by
While the Logitech MX Master 3 is a terrific mouse for the Mac, reports claiming that Apple CEO Tim Cook prefers that mouse over the Magic Mouse are false. The Wall Street Journal last month published an interview with Cook, in which he said he uses every Apple product every day. Soon after, The Verge's Wes Davis attempted to replicate using every Apple product in a single day. During that...
iPhone 17 Slim Feature Single Camera 1 Redux

'iPhone 17 Air' Rumored to Surpass iPhone 6 as Thinnest iPhone Ever

Monday November 18, 2024 1:07 pm PST by
In a research note with Hong Kong-based investment bank Haitong today, obtained by MacRumors, Apple analyst Jeff Pu said he agrees with a recent rumor claiming that the so-called "iPhone 17 Air" will be around 6mm thick. "We agreed with the recent chatter of an 6mm thickness ultra-slim design of the iPhone 17 Slim model," he wrote. If that measurement proves to be accurate, there would be ...
bug security vulnerability issue fix larry

Make Sure to Update: iOS 18.1.1 and macOS Sequoia 15.1.1 Fix Actively Exploited Vulnerabilities

Tuesday November 19, 2024 10:52 am PST by
The iOS 18.1.1, iPadOS 18.1.1, and macOS Sequoia 15.1.1 updates that Apple released today address JavaScriptCore and WebKit vulnerabilities that Apple says have been actively exploited on some devices. With the JavaScriptCore vulnerability, processing maliciously crafted web content could lead to arbitrary code execution. The WebKit vulnerability had the same issue with maliciously crafted...
apple card feature2

Apple Card 3% Daily Cash Back Now Available From Two More Apple Partners

Tuesday November 19, 2024 10:36 am PST by
Apple has partnered with select merchants to offer Apple Card users three percent Daily Cash back on their purchases, and two new companies were added to the partner list today. When purchasing goods and services from Booking.com and ChargePoint, Apple Card users will now get more cash back. Booking.com is a site for reserving flights, cars, cruises, and hotels, while ChargePoint sells...

Top Rated Comments

magicschoolbus Avatar
103 months ago
Bring back the estimated time left on the battery.. the removal of that was such a troll move by Apple.
Score: 8 Votes (Like | Disagree)
justperry Avatar
103 months 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.
Score: 7 Votes (Like | Disagree)
Guy Clark Avatar
103 months 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.
Score: 4 Votes (Like | Disagree)
duervo Avatar
103 months 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.)
Score: 3 Votes (Like | Disagree)
Altis Avatar
103 months 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.
Score: 3 Votes (Like | Disagree)
bt22 Avatar
103 months 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
Score: 3 Votes (Like | Disagree)