Apple Seeds Sixth Beta of macOS Sierra 10.12.6 to Developers and Public Beta Testers

Apple today seeded the sixth beta of an upcoming macOS Sierra 10.12.6 update to developers and public beta testers, one week after seeding the fifth beta and more than a month after releasing macOS Sierra 10.12.5, a minor bug fix update.

The sixth beta of macOS Sierra 10.12.6 can be downloaded through the Apple Developer Center or through the Software Update mechanism in the Mac App Store.

10
We didn't find any significant feature changes, design tweaks, or notable bug fixes in the first five macOS Sierra betas, and because Apple does not provide beta release notes, we may not know what's included in the update until it sees a public release.

macOS Sierra 10.12.6 is likely to be one of the final updates to the Sierra operating system as Apple transitions to macOS High Sierra, which was introduced at the Worldwide Developers Conference in June.

Related Forum: macOS Sierra

Popular Stories

iOS 26

When Will Apple Release iOS 26.2?

Monday December 1, 2025 4:37 pm PST by
We're getting closer to the launch of the final major iOS update of the year, with Apple set to release iOS 26.2 in December. We've had three betas so far and are expecting a fourth beta or a release candidate this week, so a launch could follow as soon as next week. Past Launch Dates Apple's past iOS x.2 updates from the last few years have all happened right around the middle of the...
ios 18 to ios 26 upgrade

Apple Pushes iPhone Users Still on iOS 18 to Upgrade to iOS 26

Tuesday December 2, 2025 11:09 am PST by
Apple is encouraging iPhone users who are still running iOS 18 to upgrade to iOS 26 by making the iOS 26 software upgrade option more prominent. Since iOS 26 launched in September, it has been displayed as an optional upgrade at the bottom of the Software Update interface in the Settings app. iOS 18 has been the default operating system option, and users running iOS 18 have seen iOS 18...
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Monday December 1, 2025 3:00 am PST by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that ...
iphone 17 cyber

iPhone 17 Demand Is Breaking Apple's Sales Records

Tuesday December 2, 2025 9:44 am PST by
Apple's iPhone 17 lineup is selling well enough that Apple is on track to ship more than 247.4 million total iPhones in 2025, according to a new report from IDC. Total 2025 shipments are forecast to grow 6.1 percent year over year due to iPhone 17 demand and increased sales in China, a major market for Apple. Overall worldwide smartphone shipments across Android and iOS are forecast to...
iOS 26

Apple Seeds iOS 26.2 and iPadOS 26.2 Release Candidates to Developers and Public Beta Testers

Wednesday December 3, 2025 10:33 am PST by
Apple today seeded the release candidate versions of upcoming iOS 26.2 and iPadOS 26.2 updates to developers and public beta testers, with the software coming two weeks after Apple seeded the third betas. The release candidates represent the final versions of iOS 26.2 and iPadOS 26.2 that will be provided to the public if no further bugs are found during this final week of testing....
Photos App Icon Liquid Glass

John Gruber Shares Scathing Commentary About Apple's Departing Software Design Chief

Thursday December 4, 2025 9:30 am PST by
In a statement shared with Bloomberg on Wednesday, Apple confirmed that its software design chief Alan Dye will be leaving. Apple said Dye will be succeeded by Stephen Lemay, who has been a software designer at the company since 1999. Meta CEO Mark Zuckerberg announced that Dye will lead a new creative studio within the company's AR/VR division Reality Labs. On his blog Daring Fireball,...
Touchscreen MacBook Feature

Here Are the Four MacBooks Apple Is Expected to Launch Next Year

Monday December 1, 2025 5:00 am PST by
2026 could be a bumper year for Apple's Mac lineup, with the company expected to announce as many as four separate MacBook launches. Rumors suggest Apple will court both ends of the consumer spectrum, with more affordable options for students and feature-rich premium lines for users that seek the highest specifications from a laptop. Below is a breakdown of what we're expecting over the next ...
iphone air camera

iPhone Air's Resale Value Has Dropped Dramatically, Data Shows

Thursday December 4, 2025 5:27 am PST by
The iPhone Air has recorded the steepest early resale value drop of any iPhone model in years, with new data showing that several configurations have lost almost 50% of their value within ten weeks of launch. According to a ten-week analysis published by SellCell, Apple's latest lineup is showing a pronounced split in resale performance between the iPhone 17 models and the iPhone Air....
iPhone 17 Pro Cosmic Orange

iPhone 17 Pro Lost a Camera Feature Pro Models Have Had Since 2020

Thursday December 4, 2025 5:18 am PST by
iPhone 17 Pro models, it turns out, can't take photos in Night mode when Portrait mode is selected in the Camera app – a capability that's been available on Apple's Pro devices since the iPhone 12 Pro in 2020. If you're an iPhone 17 Pro or iPhone 17 Pro Max owner, try it for yourself: Open the Camera app with Photo selected in the carousel, then cover the rear lenses with your hand to...
chatgpt logo

Sam Altman Declares 'Code Red' for ChatGPT, Delays OpenAI Advertising Plans

Tuesday December 2, 2025 3:30 pm PST by
OpenAI is deprioritizing work on advertising as it focuses on improving the quality of ChatGPT, reports The Information. OpenAI CEO Sam Altman declared a "code red" on Monday, and told employees that the company needs to improve ChatGPT so it doesn't fall behind competitors like Google and Anthropic. Altman said that OpenAI needs to work on personalization for each user, image generation,...

Top Rated Comments

fhall1 Avatar
110 months ago
It's final: the impatience for High Sierra (nobody asks for a rock solid 10.12.6, it's only gimme High Sierra, gimme High Sierra,... ) shows that Apple has changed because the users have changed. Sigh.
I want a rock solid 10.12.6 so I can finally migrate from 10.11.6
Score: 3 Votes (Like | Disagree)
MrGuder Avatar
110 months ago
I did, too. IMHO, stupid of Apple to not give 10.13 a different name than High Sierra, as people will easily confuse it with Sierra.
My personal opinion is because High Sierra will sorta be like a testing phase for Apple and its customers using all the supporting systems that High Sierra will work on. It gives them a year to fully test it out with Safari and all the coding and video enhancements.

If for some reason High Sierra doesn't go well then by next year they will assign a new name to the operating system and any negativity associated with High Sierra won't be associated with the new operating system name next fall.
Score: 2 Votes (Like | Disagree)
MrGimper Avatar
110 months ago
Oh.... How many people thought this was iOS 11/High Sierra
Score: 2 Votes (Like | Disagree)
asiga Avatar
110 months ago
I want a rock solid 10.12.6 so I can finally migrate from 10.11.6
Same boat here. I might even skip High Sierra completely and go directly to the next MacOS, so that the new filesystem has been tested in production use for at least two years (which means summer 2019, because I'm updating in summer these years, at the last version for each MacOS release).

The only exception would be if I buy a new Mac that requires High Sierra sometime in the next months. But I prefer to wait until there's either a MacBook with an screen larger than 12'', or a 13'' MacBook Pro at 1Kg (I don't really care if they call it MacBook or MacBook Pro, I just want a 13'' or 14'' display at 1Kg). So, back to the point, yes, I'd like to skip High Sierra, and keep calm until summer 2019.
Score: 2 Votes (Like | Disagree)
antmarobel Avatar
110 months ago
I agree. I hope the next update isn't Sierra Valley and they pick something else.
Considering how things are going so badly with the High Sierra (I never tested a Mac OS beta so bad like this one) I think the next name will be Death Valley :D
Score: 1 Votes (Like | Disagree)
SoyCapitanSoyCapitan Avatar
110 months ago
Oops booted into 10.13 PB
Score: 1 Votes (Like | Disagree)