Apple Seeds Eighth Beta of macOS Sierra 10.12.4 to Developers and Public Beta Testers

Apple today seeded the eighth beta of an upcoming macOS Sierra 10.12.4 update to developers and public beta testers, four days after seeding the seventh macOS Sierra 10.12.4 beta and two months after releasing macOS Sierra 10.12.3.

The eighth macOS Sierra 10.12.4 beta is available for download through the Apple Developer Center or the software update mechanism in the Mac App Store for those who have previously installed a beta.

macos-10-12-4-beta
macOS Sierra 10.12.4 brings iOS's Night Shift mode to the Mac for the first time. First introduced on iOS devices with iOS 9.3, Night Shift is designed to gradually shift the display of a device from blue to yellow, cutting down on exposure to blue light. Blue light is said to disrupt the circadian rhythm and is believed to interrupt sleeping patterns.

Night Shift can be activated through the Displays section of System Preferences, where a setting to have it come on at sunset and turn off at sunrise is available. Night Shift can also be toggled on manually through the Notification Center or via Siri.


The 10.12.4 update focuses mainly on Night Shift, but also includes dictation support for Shanghainese, cricket scores for Siri, improved PDFKit APIs, and iCloud Analytics options.

Few outward-facing changes have been discovered in macOS Sierra 10.12.4 outside of the first beta, as Apple has been working on bug fixes and improvements ahead of a public release. With the eighth beta out and the short interval since the last seed, we are getting closer to the end of the beta testing period and are likely to see a public release soon.

Related Forum: macOS Sierra

Popular Stories

wwdc sans text feature

Apple Rumored to Announce New Product on February 19

Thursday February 5, 2026 12:22 pm PST by
Apple plans to announce the iPhone 17e on Thursday, February 19, according to Macwelt, the German equivalent of Macworld. The report, citing industry sources, is available in English on Macworld. Apple announced the iPhone 16e on Wednesday, February 19 last year, so the iPhone 17e would be unveiled exactly one year later if this rumor is accurate. It is quite uncommon for Apple to unveil...
Apple Logo Zoomed

Tim Cook Teases Plans for Apple's Upcoming 50th Anniversary

Thursday February 5, 2026 12:54 pm PST by
Apple turns 50 this year, and its CEO Tim Cook has promised to celebrate the milestone. The big day falls on April 1, 2026. "I've been unusually reflective lately about Apple because we have been working on what do we do to mark this moment," Cook told employees today, according to Bloomberg's Mark Gurman. "When you really stop and pause and think about the last 50 years, it makes your heart ...
Finder Siri Feature

Why Apple's iOS 26.4 Siri Upgrade Will Be Bigger Than Originally Promised

Friday February 6, 2026 3:06 pm PST by
In the iOS 26.4 update that's coming this spring, Apple will introduce a new version of Siri that's going to overhaul how we interact with the personal assistant and what it's able to do. The iOS 26.4 version of Siri won't work like ChatGPT or Claude, but it will rely on large language models (LLMs) and has been updated from the ground up. Upgraded Architecture The next-generation...
maxresdefault

Apple Shows Off a Key Reason to Upgrade to the iPhone 17

Saturday February 7, 2026 9:26 am PST by
Apple today shared an ad that shows how the upgraded Center Stage front camera on the latest iPhones improves the process of taking a group selfie. "Watch how the new front facing camera on iPhone 17 Pro takes group selfies that automatically expand and rotate as more people come into frame," says Apple. While the ad is focused on the iPhone 17 Pro and iPhone 17 Pro Max, the regular iPhone...
iOS 26

iOS 26.3 and iOS 26.4 Will Add These New Features to Your iPhone

Tuesday February 3, 2026 7:47 am PST by
While the iOS 26.3 Release Candidate is now available ahead of a public release, the first iOS 26.4 beta is likely still at least a week away. Following beta testing, iOS 26.4 will likely be released to the general public in March or April. Below, we have recapped known or rumored iOS 26.3 and iOS 26.4 features so far. iOS 26.3 iPhone to Android Transfer Tool iOS 26.3 makes it easier...

Top Rated Comments

jbachandouris Avatar
116 months ago
My life is so lame, that this is the most exciting thing to happen to me all day.
Score: 27 Votes (Like | Disagree)
MacFever Avatar
116 months ago
Nightshift is all good... but when will we get a full dark theme option through out the MacOS.

for example :



Attachment Image
Score: 20 Votes (Like | Disagree)
theitsage Avatar
116 months ago
Hoping for new Macs tomorrow. There are changes to drivers and kext files for Polaris GPUs.
Score: 7 Votes (Like | Disagree)
thadoggfather Avatar
116 months ago
How much polish does the f.lux knockoff, I mean macOS Night Shift feature need?

:p
Score: 6 Votes (Like | Disagree)
now i see it Avatar
116 months ago
My life is so lame, that this is the most exciting thing to happen to me all day.
Not to worry. There'll be an endless stream of betas until you reach old age
Score: 6 Votes (Like | Disagree)
GubbyMan Avatar
116 months ago
Eight betas! Can I trust them and download the stable version as soon as it is released or should I wait and see if there are any major bugs that could brick my MacBook? :rolleyes:
Score: 3 Votes (Like | Disagree)