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

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

Aston Martin CarPlay Ultra Screen

Apple Says CarPlay Ultra is Coming to These Vehicle Brands

Thursday May 21, 2026 11:53 am PDT by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly a year later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. CarPlay Ultra...
iphone 18 pro blue%402x

iPhone 18 Pro: Dark Cherry, Light Blue, and Dark Gray Chassis Leaked [Update]

Thursday June 4, 2026 5:18 am PDT by
Update: Since publication, new information has come to light suggesting the images have been AI-manipulated and are not in fact iPhone 18 Pro chassis parts. The original article follows. The color options Apple is reportedly planning for the upcoming iPhone 18 Pro and ‌iPhone 18 Pro‌ Max have appeared online today in the form of images of chassis parts of unknown authenticity....
iOS 27 All the New App Features

iOS 27: All the Rumored App Features

Wednesday June 3, 2026 3:48 pm PDT by
Siri is getting a major overhaul in iOS 27, but Apple also has some big updates planned for apps like Camera, Photos, and Wallet. There are multiple new AI features in the works, plus some non-AI upgrades. Camera Apple is moving Visual Intelligence from the Camera Control button to the Camera app in iOS 27, according to Bloomberg. There will be a Siri mode that will be available alongside...

Top Rated Comments

iamtheonlyone4ever Avatar
111 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
111 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
111 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)
111 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)
fairuz Avatar
111 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)
RyanXM Avatar
111 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)