Apple Seeds Fourth Beta of macOS Sierra 10.12.5 to Developers [Update: Public Beta Too]

Apple today seeded the fourth beta of an upcoming macOS Sierra 10.12.5 update to developers, one week after seeding the third beta and one month after releasing macOS Sierra 10.12.4, which introduced Night Shift for the Mac.

The fourth beta of macOS Sierra 10.12.5 can be downloaded through the Apple Developer Center or through the Software Update mechanism in the Mac App Store.

macOS 10
According to the release notes accompanying the beta, the update "improves the stability, compatibility, and security of your Mac."

Apple's release notes don't often provide a lot of insight into what's included in new beta software, so we don't know what features or bug fixes might be included in the 10.12.5 update.

No notable changes or major bug fixes were discovered in the first three betas, but should anything pop up in the fourth macOS Sierra 10.12.5 beta, we'll update this post.

Update: Apple has also provided the fourth beta of macOS Sierra 10.12.5 to public beta testers.

Related Forum: macOS Sierra

Popular Stories

New Things Your iPhone Can Do in iOS 18

20 New Things Your iPhone Can Do in iOS 18.2

Monday December 16, 2024 8:55 am PST by
Apple released iOS 18.2 in the second week of December, bringing the second round of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update brings several major advancements to Apple's AI integration, including completely new image generation tools and a range of Visual Intelligence-based enhancements. Apple has added a handful of new non-AI related feature controls as...
iPhone 17 Slim Feature Single Camera 2 Redux

Top 5 Apple Products to Look Forward to in 2025

Friday December 20, 2024 2:22 pm PST by
It's looking like 2025 is going to be an important year for Apple, with the company planning to revamp the iPhone, push further into smart home products, and improve Apple Intelligence. There are tons of new products rumored for 2025, including new iPhones, M4 Macs, a smart home command center, and much more. We've highlighted the top five Apple products that will have the biggest impact in...
iphone 16 apple intelligence

Apple Drops Plans for iPhone Hardware Subscription Service

Wednesday December 18, 2024 11:39 am PST by
Apple is no longer planning to launch a hardware subscription service that would let customers "subscribe" to get a new iPhone each year, reports Bloomberg's Mark Gurman. Gurman first shared rumors about Apple's work on a hardware subscription service back in 2022, and at the time, he said that Apple wanted to develop a simple system that would allow customers to pay a monthly fee to gain...
mac pro creativity

Apple Launched the Controversial 'Trashcan' Mac Pro 11 Years Ago Today

Thursday December 19, 2024 7:00 pm PST by
Apple launched the controversial "trashcan" Mac Pro eleven years ago today, introducing one of its most criticized designs that persisted through a period of widespread discontentment with the Mac lineup. The redesign took the Mac Pro in an entirely new direction, spearheaded by a polished aluminum cylindrical design that became unofficially dubbed the "trashcan" in the Mac community. All of ...
Generic iOS 18 Feature Real Mock

iOS 18.2.1 Update Coming Soon for iPhone

Saturday December 21, 2024 4:45 pm PST by
Apple appears to be internally testing iOS 18.2.1 for the iPhone, based on evidence of the software update in our website's analytic logs this week. The logs have accurately revealed many iOS versions before they were released. iOS 18.2.1 should be a minor update that fixes bugs and/or addresses security vulnerabilities, but it is unclear which specific issues might be resolved. The update...
blackmagic vision pro

Blackmagic Debuts $30K 3D Camera for Capturing Video for Vision Pro

Monday December 16, 2024 4:17 pm PST by
Blackmagic today announced that its URSA Cine Immersive camera is now available for pre-order, with deliveries set to start late in the first quarter of 2025. Blackmagic says that this is the world's first commercial camera system designed to capture 3D content for the Vision Pro. The URSA Cine Immersive camera was first introduced in June, but it has not been available for purchase until...
apple tv 4k yellow bg feature

New Apple TV Rumored to Launch Next Year With These Features

Tuesday December 17, 2024 9:02 am PST by
The current Apple TV 4K was released more than two years ago, so the streaming device is becoming due for a hardware upgrade soon. Fortunately, it was recently rumored that a new Apple TV will launch at some point next year. Below, we recap rumors about the next-generation Apple TV. Bloomberg's Mark Gurman last week reported that Apple has been working on its own combined Wi-Fi and...
iPhone 17 Pro Dual Tone Feature 1

iPhone 17 Pro Rumored to Stick With 'Triangular' Camera Design

Wednesday December 18, 2024 2:36 am PST by
Contrary to recent reports, the iPhone 17 Pro will not feature a horizontal camera layout, according to the leaker known as "Instant Digital." In a new post on Weibo, the leaker said that a source has confirmed that while the appearance of the back of the iPhone 17 Pro has indeed changed, the layout of the three cameras is "still triangular," rather than the "horizontal bar spread on the...

Top Rated Comments

Vashetti Avatar
100 months ago
Dear Apple, How do I remove the constantlyupdate-all-the-time PITA feature? Thanks.
By not applying for the beta programme.

Apt username, too.
Score: 14 Votes (Like | Disagree)
TMRJIJ Avatar
100 months ago
Another suppressive release. They killed Handbrake. What next?
[LIST=1]
* It's a Beta. There are no 'releases' of macOS 10.12.5 yet.
* HandBrake works fine for me and apparently other people in the forum
* It's a Developers Preview and something tells me that you are not much of a developer if you feel you needed to throw a fit that an app is not working on your primary Mac (of which you shouldn't be installing this preview on)

EDIT: BTW you probably shouldn't try the public beta either
Score: 7 Votes (Like | Disagree)
chriscrowlee Avatar
100 months ago
Another suppressive release. They killed Handbrake. What next?
You obviously don't understand what Beta means. And if it angers you that third party software doesn't work, revert back to the public final release version available and NEVER install a Beta again. How do you think software developers release software? They get the Beta from Apple, then design their app to work with the OS. How would you expect a developer to develop software on an OS that they don't have access to? Get real.

Anyhow, it's obviously an isolated issue, as my Handbrake works just fine, and you're the ONLY one on here that's say it doesn't work. Every other post says it works fine.

If you can't live without ANY single app working on your computer, DO NOT INSTALL BETAS.
Score: 5 Votes (Like | Disagree)
kissmo Avatar
100 months ago
I think Mac os 10.13 will be called Mac OS Beta
Score: 5 Votes (Like | Disagree)
justperry Avatar
100 months ago
I think Mac os 10.13 will be called Mac OS Beta
And why is that?
Sierra was one hell of a stable OS when released, the next one might be the same or better.
Score: 3 Votes (Like | Disagree)
kevo0822 Avatar
100 months ago
And why is that?
Sierra was one hell of a stable OS when released, the next one might be the same or better.
If you relied on Preview for viewing/annotating PDFs, Sierra was the most UNUSABLE OS release from Apple in a long long time.
Score: 2 Votes (Like | Disagree)