Apple Seeds First macOS Sierra 10.12.1 Beta to Developers

Apple today seeded the first beta of an upcoming macOS Sierra update to developers, just a day after releasing the new operating system to the public.

macOS Sierra Beta 10.12.1 is available for download through the Apple Developer Center and through the Software update mechanism in the Mac App Store.

macossierra
It is not clear what improvements the first update to macOS Sierra will bring, but it's likely to include bug fixes and performance improvements for issues that have been encountered between the time between the beta testing period and release.

We'll update this post with any new features that are found in macOS Sierra 10.12.1.

Related Forum: macOS Sierra

Popular Stories

AirPods Pro 3 Mock Feature

AirPods Pro 3 Just Months Away – Here's What We Know

Friday April 18, 2025 5:16 am PDT by
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
CarPlay Hero

Apple Releases Wireless CarPlay Fix

Wednesday April 16, 2025 11:28 am PDT by
If you have been experiencing issues with wireless CarPlay in your vehicle lately, it was likely due to a software bug that has now been fixed. Apple released iOS 18.4.1 today, and the update's release notes say it "addresses a rare issue that prevents wireless CarPlay connection in certain vehicles." If wireless CarPlay was acting up for you, updating your iPhone to iOS 18.4.1 should...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday April 17, 2025 4:12 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 simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
Beyond iPhone 13 Better Triad

Apple's 20th Anniversary iPhone May Finally Go All Screen

Tuesday April 15, 2025 6:31 am PDT by
Apple is preparing a "bold" new iPhone Pro model for the iPhone's 20th anniversary in 2027, according to Bloomberg's Mark Gurman. As part of what's being described as a "major shake-up," Apple is said to be developing a design that makes more extensive use of glass – and this could point directly to the display itself. Here's the case for Apple releasing a truly all-screen iPhone with no...
maxresdefault

iPhone 17 Pro Launching Later This Year With These 12 New Features

Sunday April 13, 2025 7:52 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Subscribe to the MacRumors YouTube channel for more videos. Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and ...
iOS 19 Roundup Feature

iOS 19 Will Add These New Features to Your iPhone

Tuesday April 15, 2025 7:37 am PDT by
The first iOS 19 beta is less than two months away, and there are already a handful of new features that are expected with the update. Apple should release the first iOS 19 beta to developers immediately following the WWDC 2025 keynote, which is scheduled for Monday, June 9. Following beta testing, the update should be released to the general public in September. Below, we recap the key...
top stories 2025 04 19

Top Stories: iPhone 17 Pro Rumors, CarPlay Bug Fix, and More

Saturday April 19, 2025 6:00 am PDT by
This week saw rumor updates on the iPhone 17 Pro and next-generation Vision Pro, while a minor iOS 18.4.1 update delivered not just security fixes but also a fix for some CarPlay issues. We also looked ahead at what else is in Apple's pipeline for the rest of 2025 and even the 20th-anniversary iPhone coming in 2027, so read on below for all the details on these stories and more! iPhone 17 ...
Apple TV Plus Feature 2 Magenta and Blue

Apple TV+ Available at Significantly Lower Price Until Next Week

Friday April 18, 2025 11:42 am PDT by
Apple TV+ is currently available at a much lower price than usual, but time is running out if you want to take advantage of the offer. In the U.S., new and qualified returning customers can subscribe to Apple TV+ for just $2.99 per month, for three months. Afterwards, regular pricing of $9.99 per month applies. The offer is available in the Apple TV app, and at tv.apple.com, through April...

Top Rated Comments

TurboPGT! Avatar
112 months ago
I never install a .0 release, including 10.12.1.0 ...
I install them all. Somehow I survive.
Score: 16 Votes (Like | Disagree)
MrGimper Avatar
112 months ago
Siri is non-functional on my 2014 5k iMac. (It can't find the iMac's internal microphone.) So I hope Apple gets that straightened out. After all, it's Sierra's most-touted feature.
First the headphone jack on the iPhone, now the microphone on iMacs ..... Apple are in a courage overdrive.
Score: 9 Votes (Like | Disagree)
RightMACatU Avatar
112 months ago
Apple becoming the Lucky Luke of software release (faster that its shadow) :D
Score: 4 Votes (Like | Disagree)
chrfr Avatar
112 months ago
I am running the official retail version of Sierra (I was part of the developer beta programme). I since changed my SYSTEM PREFERENCES -> APP STORE -> and changed "your system is set to receive pre-release..." to NO.

Since then that option no longer appears in the APP store.

However, in my updates the BETA for 10.12.1 is showing which is exactly what I do NOT want.

How can I disable this given I've already done the above.
For some reason disabling the "pre-release updates" setting in the App Store system preference isn't working. You can solve this by opening terminal and entering:
sudo defaults delete /Library/Preferences/com.apple.SoftwareUpdate CatalogURL
Enter your password when prompted.
This will set Software Update back to using the standard non-beta catalog.
Score: 3 Votes (Like | Disagree)
Morris Avatar
112 months ago
Interesting, only a day after release, curious to see what this will bring to the table...
They will have been working on 10.12.1 for at least a month, probably much longer, so it is not that surprising. There comes a time when it become too risky to add certain fixes to the 10.12.0 build and you're better off saving them for the first major update.
Score: 3 Votes (Like | Disagree)
closer01 Avatar
112 months ago
I'd love it if my watch would actually open my iMac as promised (yes it's a late 2015 and I have all the latest devices with the latest software updates).
Score: 2 Votes (Like | Disagree)