Apple Seeds First Beta of macOS Sierra 10.12.6 to Developers

Apple today seeded the first beta of an upcoming macOS Sierra 10.12.6 update to developers, one day after releasing macOS Sierra 10.12.5, a minor update that introduced a fix for a bug with USB headphones and other small improvements.

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

012 macos sierra 970 80
We don't know yet what's included in the macOS Sierra 10.12.6 update, but with the debut of the next-generation version of macOS approaching, it's likely to feature minor bug fixes, improvements, and security enhancements.

Development of macOS is wrapping up as Apple transitions to macOS 10.13, which will be introduced at the Worldwide Developers Conference in June.

Related Forum: macOS Sierra

Popular Stories

ios 26 1 slide to stop

iOS 26.1 Brings Back 2007 Feature in New Way

Friday October 31, 2025 1:40 pm PDT by
The upcoming iOS 26.1 update includes a small but helpful change for iPhones, and it could prevent you from running late to something important. Specifically, when an alarm goes off in the Clock app, there is a new "slide to stop" control on the screen for turning off the alarm. On previous iOS 26 versions, there is simply a large "stop" button, which could be accidentally tapped. The new ...
Apple Logo Spotlight

Report: Apple to Launch These New Products in 2026

Sunday November 2, 2025 5:34 am PST by
Apple is planning to launch at least 15 new products in 2026, according to Bloomberg's Mark Gurman. Gurman outlined what to expect from Apple in 2026 in the latest edition of his "Power On" newsletter. He said the company is heading "into one of its most pivotal years in recent memory," with the rollout of major new Apple Intelligence features, intense regulatory pressure on the App Store,...
M5 MacBook Pro

Waiting for New Macs? Apple Just Shared Bad News

Friday October 31, 2025 7:32 am PDT by
Apple has just given a strong indication that it will not be releasing any additional new Macs for the remainder of the year. Apple's CFO Kevan Parekh dropped the hint during the company's earnings call on Thursday:On Mac, keep in mind, we expect to face a very difficult compare against the M4 MacBook Pro, Mac mini, and iMac launches in the year-ago quarter.Parekh essentially gave a heads up ...
Apple Intelligence General Feature 2

New Version of Siri to 'Lean' on Google Gemini

Sunday November 2, 2025 6:06 am PST by
In his "Power On" newsletter, Bloomberg's Mark Gurman today provided an update on the status of Apple Intelligence and the plans for it in 2026. Apple is still planning to roll out its revamped version of Siri around March of next year. The release should be accompanied by the release of a new smart home display product with speaker-base and wall-mount options. A new Apple TV and HomePod...
Apple Foldable Thumb

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

Friday October 31, 2025 8:52 am PDT 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. Below, we've collated an updated set of key details that have been leaked about Apple's foldable iPhone so far. Ove...
HomePod mini and Apple TV

New Apple TV and HomePod Mini Likely Launching Soon

Sunday November 2, 2025 5:49 am PST by
A new Apple TV and HomePod mini could launch as soon as this month, Bloomberg's Mark Gurman today suggested. In today's "Power On" newsletter, Gurman said that Apple retail stores are planning an overnight refresh on the evening of November 11, where changes will be made after closing, such as refreshing displays and placing new products for the following day. The timing of the overnight...
Coffee Burgundy and Purple iPhone 18 Pro Mock 1

Leaker Outlines Potential New Colors for iPhone 18 Pro

Friday October 31, 2025 8:28 am PDT by
Apple's iPhone 18 Pro models could be available in new rich and warm color option, according to a known leaker. The Weibo user known as "Instant Digital" today suggested that next-year's iPhone 18 Pro models will be available in at least one of the following color options: Coffee, purple, and burgundy. The iPhone XR, iPhone 11, iPhone 12, iPhone 14, and iPhone 14 Pro were all available in ...
iPhone 17 Pro Cosmic Orange

8 Reasons to Wait for Next Year's iPhone 18 Pro

Thursday October 30, 2025 4:42 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
iOS 26

6 New Things Your iPhone Can Do in iOS 26.1

Wednesday October 29, 2025 4:22 am PDT by
Apple is about to drop iOS 26.1, the first major point release since iOS 26 was rolled out in September, and there are at least six notable changes and improvements to look forward to. We've rounded them up below. Apple has already provided developers and public beta testers with the release candidate version of iOS 26.1, which means Apple will likely roll out the update to all compatible...

Top Rated Comments

redscull Avatar
111 months ago
MacRumors:
Seems Apple releases these betas and whatnot for all the OSs at the same time. Do we really need 4+ stories when they do this? It just scrolls your other content off the page faster. Why can't you wrap up all the release bits into one post for all OSs?

Better yet, would you consider a new "page" for these frequent version release stories? Not only would that declutter the main and secondary news pages, but a page dedicated to version release changes (essentially a patch log) would be nice and concise for perusing and discussing the evolution of mac features on the different platforms.
Score: 16 Votes (Like | Disagree)
jclo Avatar
111 months ago
MacRumors:
Seems Apple releases these betas and whatnot for all the OSs at the same time. Do we really need 4+ stories when they do this? It just scrolls your other content off the page faster. Why can't you wrap up all the release bits into one post for all OSs?

Better yet, would you consider a new "page" for these frequent version release stories? Not only would that declutter the main and secondary news pages, but a page dedicated to version release changes (essentially a patch log) would be nice and concise for perusing and discussing the evolution of mac features on the different platforms.
I write these posts ahead of time so we can let you guys know as soon as a new beta is up. I can't combo them simply because they don't always come out at the same time. A new page isn't an option right now, but putting all minor beta updates on the blog is something we can consider.

I realize some people don't care for the beta posts, especially when they focus on minor changes, but a lot of people are interested in knowing when a new beta is out and discussing any possible changes.

We're coming up on iOS 11, macOS 10.13, and other new software releases, so beta posts will soon get a lot more exciting.
Score: 9 Votes (Like | Disagree)
WildCowboy Avatar
111 months ago
MacRumors:
Seems Apple releases these betas and whatnot for all the OSs at the same time. Do we really need 4+ stories when they do this? It just scrolls your other content off the page faster. Why can't you wrap up all the release bits into one post for all OSs?

Better yet, would you consider a new "page" for these frequent version release stories? Not only would that declutter the main and secondary news pages, but a page dedicated to version release changes (essentially a patch log) would be nice and concise for perusing and discussing the evolution of mac features on the different platforms.
In addition to what Juli said, we also separate them out so that the forum discussion threads can be focused on each release rather than a jumble. We know it's a flood of stories all at once most times, and we've tried to minimize it a bit by keeping iOS and macOS on the front page while we put watchOS and tvOS on the blog. We can start putting macOS on the blog again, but we've gotten complaints in the past about that making the Mac a second-class citizen and an example of the downfall of Apple and MacRumors. ;)
Score: 8 Votes (Like | Disagree)
redheeler Avatar
111 months ago
Why can't you wrap up all the release bits into one post for all OSs?
There are those, like myself, that only run MacOS betas or only run iOS betas and don't want to scroll though off-topic posts in this thread that discuss the other. For me it's MacOS, which is why I'm here instead of the iOS article thread. So I'm fine with the separate articles, even prefer it.
Score: 4 Votes (Like | Disagree)
kissmo Avatar
111 months ago
Well, maybe this time it will be macOS 11
Just a feeling or call it a hunch - when Apple releases macOS 11 - it will be the end of Steve's touches on the Mac.
I just got this shiver...

I am not saying it's bad, I am only saying it might feel as a goodbye to an era for the Mac.
Score: 3 Votes (Like | Disagree)
redscull Avatar
111 months ago
I realize some people don't care for the beta posts, especially when they focus on minor changes, but a lot of people are interested in knowing when a new beta is out and discussing any possible changes.
I appreciate you taking the time to listen and respond.

I agree that even the less interesting betas are still news worth posting [on some page]. I didn't want to advocate them disappearing entirely. It's just the plastering of multiple stories at once that gets in the way. Too bad we can't have a new patch log page. Not just because of feeling the non-major releases aren't front page worthy, but also because I think it'd make the release posts more interesting to view them with readily accessible historical context.
Score: 2 Votes (Like | Disagree)