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

Everything New in iOS 26.1 Beta 1

Monday September 22, 2025 12:44 pm PDT by
Apple released the first beta of iOS 26.1 today, just a week after launching iOS 26. iOS 26.1 mainly adds new languages to Apple Intelligence, but there are a few other features that are worth knowing about. New Apple Intelligence Languages Apple Intelligence is now available in Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. AirPo...
apple tv 4k new orange

Next Apple TV Expected to Launch This Year With These New Features

Monday September 22, 2025 10:00 am PDT by
The next Apple TV is expected to be released later this year, and a handful of new features and changes have been rumored for the device. Below, we recap what to expect from the next Apple TV, according to rumors. Likely Features N1 Chip With Wi-Fi 7 Last year, Bloomberg's Mark Gurman said the next Apple TV would be equipped with Apple's own combined Wi-Fi and Bluetooth chip, which is...
Apple Intelligence General Feature 2

iOS 26.1 Adds New Apple Intelligence Languages and Expands AirPods Live Translation

Monday September 22, 2025 11:15 am PDT by
With iOS 26.1, Apple Intelligence is gaining support for additional languages, including Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. Apple announced plans to expand the languages that can be used with Apple Intelligence last year, and now the added language support is here. Apple Intelligence is now available in the following...
iPhone 17 Pro and Air N1 Feature

Some iPhone 17, iPhone 17 Pro, and iPhone Air Users Experiencing Intermittent Wi-Fi Issue

Monday September 22, 2025 8:44 am PDT by
Apple's latest iPhone models launched on Friday, and some early adopters of the devices are experiencing intermittent Wi-Fi issues. Affected customers say Wi-Fi connectivity periodically cuts out on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air, with hundreds of comments about the issue posted across the MacRumors Forums, Reddit, and the Apple Support Community over the...
Apple Foldable Thumb

Foldable iPhone Like 'Two Titanium iPhone Airs' Joined at the Hinge

Monday September 22, 2025 2:16 am PDT by
Next year's rumored foldable iPhone will showcase an ultra-thin design resembling "two titanium iPhone Airs side-by-side," according to Bloomberg's Mark Gurman. Writing in the Q&A section of his latest Power On newsletter, Gurman says Apple's first foldable device will be "super thin and a design achievement," combining Apple's thinnest iPhone form factor with cutting-edge folding...
iPhone 17 Pro and Air Feature

Two iPhone 17 Pro and iPhone Air Colors Appear to Scratch More Easily

Friday September 19, 2025 10:02 am PDT by
As reported by Bloomberg today, some of the new iPhone 17 Pro and iPhone Air models on display at Apple Stores today are already scratched and scuffed. French blog Consomac also reported on this topic. The scratches appear to be most prominent on models with darker finishes, including the iPhone 17 Pro and Pro Max in Deep Blue, and the iPhone Air in Space Black. Images Credit: Consoma ...
iPhone 17 Pro USB C Port

iPhone 17 Pro Max's USB-C Charging Speeds Tested With Apple Chargers

Monday September 22, 2025 7:29 am PDT by
The website ChargerLAB has tested the iPhone 17 Pro Max's USB-C charging speeds with a variety of Apple's chargers, from 18W to 140W. The device reached a peak charging speed of around 36W with the following Apple chargers:40W Dynamic Power Adapter with 60W Max 61W USB-C Power Adapter 67W USB-C Power Adapter 70W USB-C Power Adapter 96W USB-C Power Adapter 140W USB-C Power AdapterFor...
iOS 26

Apple Seeds First Betas of iOS 26.1, iPadOS 26.1, and macOS Tahoe 26.1

Monday September 22, 2025 10:05 am PDT by
Apple today provided developers with the first betas of upcoming iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, watchOS 26.1, and visionOS 26.1 updates for testing purposes. The new betas are the first updates to the iOS, iPadOS, macOS 26, watchOS, tvOS, and visionOS releases that came out last week. The new betas can be downloaded from the Settings app on a compatible device by going...

Top Rated Comments

fhall1 Avatar
107 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
107 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
107 months ago
Oh.... How many people thought this was iOS 11/High Sierra
Score: 2 Votes (Like | Disagree)
asiga Avatar
107 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
107 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
107 months ago
Oops booted into 10.13 PB
Score: 1 Votes (Like | Disagree)