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

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

Apple today seeded the fifth beta of an upcoming macOS High Sierra 10.13.3 update to developers, one week after seeding the fourth beta and more than a month after releasing macOS High Sierra 10.13.2, the second major update to the macOS High Sierra operating system.

The new 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.

macoshighsierra10133beta
It's not yet clear what improvements the macOS High Sierra 10.13.3 update 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. It offers additional fixes for the Spectre and Meltdown vulnerabilities that were discovered and publicized in early January and fixed initially in macOS High Sierra 10.13.2.

The update also fixes a bug that allows the App Store menu in the System Preferences to be unlocked with any password.

The previous macOS High Sierra 10.13.2 update focused solely on security fixes and performance improvements, with no new features introduced, and a supplemental update introduced a fix for the Spectre vulnerability.

Update: A new public beta of macOS High Sierra 10.13.3 is available for public beta testers.

Related Forum: macOS High Sierra

Popular Stories

Apple Event Logo

Apple's Next Era Begins September 1

Thursday May 7, 2026 10:36 am PDT by
Apple recently announced that Tim Cook will be stepping down as CEO later this year, after 15 years of leading the company. Effective September 1, Apple's hardware engineering chief John Ternus will become the company's next CEO, while Cook will become executive chairman of Apple's board of directors. In his new role, Apple said Cook will assist with "certain aspects" of the company,...
Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro Launching in September With These 10 New Features

Saturday May 9, 2026 6:03 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not launching until September, there are already plenty of rumors about the devices. It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component will be moved under the...
Apple Watch Series 10 Jet Black Touch ID

Apple Watch Series 12 and watchOS 27: What to Expect Later This Year

Friday May 8, 2026 2:07 pm PDT by
While not too much has been reported about the next Apple Watch models, there are a few rumors about potential design changes and watchOS 27 features. Apple Watch Series 12 and Apple Watch Ultra 4 models are expected to be released in September, and we have outlined some of the key rumored hardware and software changes below. A new Apple Watch SE is not expected this year, as that model was...

Top Rated Comments

109 months ago
I sure hope so! As a matter of fact, I am really hoping Apple does not release 10.14. this summer and just focuses on fixing the loooong list of bugs in this operating system.
Same with iOS. We need a snow leopard year for software. Only for them to just screw it all up again with tons of bugs in the next cycle but it would be nice to delay the pain. Haha.
Yeah, they really need to increase the new OS cycle to 2-3 years and not every year. It seems like by the time they get all the wrinkles ironed out, they release a new bug-filled OS that we have to wait another year to not be so buggy again. It's annoying.
Score: 11 Votes (Like | Disagree)
109 months ago
It's not yet clear what improvements the macOS High Sierra 10.13.3 update 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.
I sure hope so! As a matter of fact, I am really hoping Apple does not release 10.14. this summer and just focuses on fixing the loooong list of bugs in this operating system.
Score: 9 Votes (Like | Disagree)
N0ughtsAndCr0sses Avatar
109 months ago
God help us all!!!
Score: 9 Votes (Like | Disagree)
109 months ago
I am really hoping Apple does not release 10.14. this summer and just focuses on fixing the loooong list of bugs in this operating system.
The whole purpose off High Sierra was to fine tune Sierra. It is/was supposed to be a "snow leopard" type release... but has fallen short of that dream.
Score: 7 Votes (Like | Disagree)
109 months ago
I'll be installing it right away, upon release.

What.
Could.
Possibly.
Go.
Wrong.
Score: 7 Votes (Like | Disagree)
jonnyb098 Avatar
109 months ago
I sure hope so! As a matter of fact, I am really hoping Apple does not release 10.14. this summer and just focuses on fixing the loooong list of bugs in this operating system.
Same with iOS. We need a snow leopard year for software. Only for them to just screw it all up again with tons of bugs in the next cycle but it would be nice to delay the pain. Haha.
Score: 6 Votes (Like | Disagree)