Apple Seeds First Beta of macOS High Sierra 10.13.3 to Developers [Update: Public Beta Available]

Apple today seeded the first beta of an upcoming macOS High Sierra 10.13.3 update to developers, less than one week after releasing the macOS High Sierra 10.13.2 update, the second major update to the macOS High Sierra operating system.

The macOS High Sierra 10.13.3 beta can be downloaded from the Apple Developer Center or through the Software Update mechanism in the Mac App Store with the proper profile installed.

macos high sierra
It's not yet clear what improvements the third update to macOS High Sierra will bring, but it's likely to include bug fixes and performance improvements for issues that weren't addressed in macOS High Sierra 10.13.2.

The previous macOS High Sierra 10.13.2 update focused solely on security fixes and performance improvements, with no outward-facing changes introduced.

Update: Apple has also seeded the macOS High Sierra 10.13.3 update to public beta testers.

Related Forum: macOS High Sierra

Popular Stories

iPhone 17 Pro 34ths Perspective

iPhone 17 Pro Launching Later This Year With These 10 New Features

Sunday March 23, 2025 10:00 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. Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
iOS 18

iOS 18.4 Expected Next Week - Here Are the Release Notes

Friday March 28, 2025 2:01 pm PDT by
With the second release candidate of iOS 18.4 that Apple seeded out today, the company finally provided us with release notes that give a full rundown on what to expect. There's an Apple Vision Pro app, new Apple Intelligence features for notifications and additional language support, plus an Apple News Food feature for Apple News+ subscribers, and several updates that should improve the...
Magic Mouse Green

What to Expect From the Magic Mouse 3

Saturday March 29, 2025 10:15 am PDT by
Apple is reportedly working on a new Magic Mouse. Below, we recap what to expect. The two key rumors for the Magic Mouse 3 so far include a relocated charging port, along with a more ergonomic design. It was briefly rumored that the Magic Mouse 3 would also feature voice control, but that was misinterpreted information. Relocated Charging Port While the Magic Mouse switched from...
top stories 2025 03 29

Top Stories: WWDC 2025 Announced, iPhone 17 Pro and iOS 19 Rumors, and More

Saturday March 29, 2025 6:00 am PDT by
Apple's big developer event is a little over two months away, and rumors about what we can expect to see in Apple's next major operating system updates are becoming increasingly frequent. A public release of iOS 18.4 is also imminent with a number of updates and improvements, although we won't be getting the major Apple Intelligence Siri upgrades that had reportedly been planned for this...
Foldable iPhone 2023 Feature Homescreen

Six Things to Know About Apple's Upcoming Foldable iPhone

Friday March 28, 2025 3:54 pm PDT by
We've been hearing rumors about a foldable iPhone for almost a decade now, but it looks like we might finally see the device come to fruition in 2026. We're going to be waiting many more months for the foldable iPhone, but so far we're hearing good things. Apple wants to make it creaseless. It's taken Apple multiple years to design a foldable iPhone that it's satisfied with because Apple ...
iOS 19 visionOS UI Elements

Apple Codename Provides Clue About iOS 19's Rumored New Design

Sunday March 30, 2025 6:40 am PDT by
Multiple sources have claimed that iOS 19 will introduce a new design with more translucent buttons, menus, notification banners, and more, and there is now another clue that points towards this glass-like appearance. Bloomberg's Mark Gurman today said the new design project is codenamed "Solarium" internally. A solarium is a room with glass walls that allow in plenty of sunlight, so this...
maxresdefault

Apple Releases iOS 18.4 With Priority Notifications, Ambient Music, New Emoji and More

Monday March 31, 2025 10:03 am PDT by
Apple today released iOS 18.4 and iPadOS 18.4, the fourth major updates to the iOS 18 and iPadOS 18 operating system updates that came out last year. iOS 18.4 and iPadOS 18.4 come two months after Apple released iOS 18.3 and iPadOS 18.3. Subscribe to the MacRumors YouTube channel for more videos. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to...
ipad pro 2024

Gurman: New iPad Pro and MacBook Pro Models With M5 Chips to Launch Later This Year

Sunday March 30, 2025 6:06 am PDT by
Apple's next-generation iPad Pro models with the M5 chip will "launch this year," according to Bloomberg's Mark Gurman. In his Power On newsletter today, Gurman said the new iPad Pro models have progressed to an "advanced testing" stage, and he expects mass production of the devices to begin in the second half of this year. If that timeframe is met, the new iPad Pro models could launch...

Top Rated Comments

iamtheonlyone4ever Avatar
95 months ago
apple is moving too fast , that's why we are getting all these bugs, focus more on stability and who cares how long it takes, yearly release not cool anymore, stay with the same os at least 2 or 3 years, not falling for it anymore, I'm not joining the hype bandwagon
Score: 17 Votes (Like | Disagree)
Chazzle Avatar
95 months ago
tvOS isn't mobile so that argument doesn't fly.
You know exactly the point he is making.
Score: 15 Votes (Like | Disagree)
akfgpuppet Avatar
95 months ago

It's not yet clear what improvements the third update to macOS High Sierra will bring, but it's likely to include bug fixes and performance improvements for issues that weren't addressed in macOS High Sierra 10.13.2.
New emojis as always.
Score: 9 Votes (Like | Disagree)
Naaaaak Avatar
95 months ago


* Mac OS X 10.0 ('https://en.wikipedia.org/wiki/Mac_OS_X_10.0') – code name "Cheetah", released in 2001
* Mac OS X 10.1 ('https://en.wikipedia.org/wiki/Mac_OS_X_10.1') – code name "Puma", released in 2001
* Mac OS X 10.2 ('https://en.wikipedia.org/wiki/Mac_OS_X_10.2') – also marketed as "Jaguar", released in 2002
* Mac OS X Panther ('https://en.wikipedia.org/wiki/Mac_OS_X_Panther') – version 10.3, released in 2003
* Mac OS X Tiger ('https://en.wikipedia.org/wiki/Mac_OS_X_Tiger') – version 10.4, released in 2005
* Mac OS X Leopard ('https://en.wikipedia.org/wiki/Mac_OS_X_Leopard') – version 10.5, released in 2007
* Mac OS X Snow Leopard ('https://en.wikipedia.org/wiki/Mac_OS_X_Snow_Leopard') – version 10.6, released in 2009
* Mac OS X Lion ('https://en.wikipedia.org/wiki/Mac_OS_X_Lion') – version 10.7, released in 2011
* OS X Mountain Lion ('https://en.wikipedia.org/wiki/OS_X_Mountain_Lion') – version 10.8, released in 2012
* OS X Mavericks ('https://en.wikipedia.org/wiki/OS_X_Mavericks') – version 10.9, released in 2013
* OS X Yosemite ('https://en.wikipedia.org/wiki/OS_X_Yosemite') – version 10.10, released in 2014
* OS X El Capitan ('https://en.wikipedia.org/wiki/OS_X_El_Capitan') – version 10.11, released in 2015
* macOS Sierra ('https://en.wikipedia.org/wiki/MacOS_Sierra') – version 10.12, released in 2016
* macOS High Sierra ('https://en.wikipedia.org/wiki/MacOS_High_Sierra') – version 10.13, released in 2017

* 10.0: Important to finally ship. Dog-slow and unusable for a lot.
* 10.1: Important to ship same year. The usable 10.0.
* 10.2: Quartz Extreme and other improvements made it more usable. The release a lot of users made the jump to.
* 10.3: Safari, early FileVault (only worked for home directory), the brushed metal virus, and esoteric things like Pixlet. Might have broken certain Carbon apps with weird-colored text.
* 10.4: Spotlight, Core Data, and Dashboard widgets. Remember, the 2 years between 10.5 also brought a significant update that worked on Intel Macs.
* 10.5: Time Machine, Core Animation, bunch of UI fads, 64-bit UI. Dev cycle was slowed by iOS development.
* 10.6: The “good” release people remember. They took 2-years (thanks iOS) and fixed issues. This is what people want.
* 10.7: Particularly buggy with auto-save and thin scrollbars, but proper full-disk FileVault.
* 10.8: A less buggy 10.7 with its own issues.
* 10.9: Compressed memory, removal of some skeuomorphic crap, more in-line with iOS, but had its own issues.
* 10.10: More skeuomorphic purge, had its own issues.
* 10.11: New system font, Metal,better Mail/Notes. Felt so minor.
* 10.12: Siri, Safari Apple Pay, iCloud drive, and the most annoying “optimized storage”.
* 10.13: AFPS, Metal 2, Safari blocks annoying website features and tracking, but maybe the buggiest release ever.


It’s not the frequency of updates; it’s the lack of quality and persuit of short-term UI fads or dumb consumery apps, treating users as testers, and syncing releases to iOS.
Score: 6 Votes (Like | Disagree)
RyanXM Avatar
95 months ago
did they fix the pause/play buttons playing/pausing the wrong media yet...
That isn't a bug. High Sierra was programmed to control whatever media is currently "active". If iTunes is the only program active, it will control iTunes. If you have a YouTube video playing, it will control YouTube. There is a program that will revert back to the Sierra way of controlling iTunes.
Score: 6 Votes (Like | Disagree)
fairuz Avatar
95 months ago
apple is moving too fast , that's why we are getting all these bugs, focus more on stability and who cares how long it takes, yearly release not cool anymore, stay with the same os at least 2 or 3 years, not falling for it anymore, I'm not joining the hype bandwagon
First OSx came 2001 and current version is just an evolution of that made by updating it yearly
Yeah, it's annoying. The 10.x versions are always quite large updates that break a lot of third-party stuff and introduce bugs. I'm mainly sick of all my software breaking every single year. Like, great, I just can't use my Photoshop anymore... why the **** did I update. Oh, to use the new Xcode and to have the small security fixes.
Score: 6 Votes (Like | Disagree)