Apple Seeds Second Beta of macOS High Sierra 10.13.3 to Developers - MacRumors
Skip to Content

Apple Seeds Second Beta of macOS High Sierra 10.13.3 to Developers

Apple today seeded the second beta of an upcoming macOS High Sierra 10.13.3 update to developers, one week after seeding the first beta and almost two weeks after releasing macOS High Sierra 10.13.2, 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.

macoshighsierra10133beta
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.

No major outward-facing changes were discovered in the first beta of macOS High Sierra 10.13.3, but we'll update this post should new features be found in the second beta.

The previous macOS High Sierra 10.13.2 update focused solely on security fixes and performance improvements, with no new features introduced.

Related Forum: macOS High Sierra

Popular Stories

WWDC26 MR Live Coverage Article

WWDC 2026 Apple Event Live Keynote Coverage: iOS 27, Revamped Siri, and More

Monday June 8, 2026 9:15 am PDT by
Apple's Worldwide Developers Conference (WWDC) starts today with the traditional keynote kicking things off at 10:00 a.m. Pacific Time. MacRumors is on hand for the event and we'll be sharing details and our thoughts throughout the day. We're expecting to see a number of software-related announcements today, headlined by a reset on Apple's push into AI that should see a significant overhaul...
macOS Golden Gate Mac

Apple Announces macOS Golden Gate

Monday June 8, 2026 10:19 am PDT by
Apple today announced that macOS 27 is named macOS Golden Gate. Much like Mac OS X Snow Leopard in 2009, Apple said it focused on improving macOS's performance and dozens of underlying technologies this year. Apple says macOS Golden Gate offers quicker AirDrop transfers, faster network file browsing, improved syncing in the Messages app, better Spotlight search suggestions, and other...
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...

Top Rated Comments

111 months ago
I could be wrong, but I recall the dark mode being more gray and translucent in prior versions.
It seems you have "Reduce transparency" on.
Score: 3 Votes (Like | Disagree)
FrancoisC Avatar
111 months ago
Bring AFPS support for external booting disks and Time Machine disks.
I’m booting an external APFS formatted SSD (in an usb 3.0 enclosure) on my mac mini 2012?

There IS a delay when booting from it (black screen for a little while) but it work.

On what machine is it not working for you?

Edit: Forgot to mention; this is on 10.3.2, not the beta.
Score: 3 Votes (Like | Disagree)
dan9700 Avatar
111 months ago
Release notes.

https://forums.macrumors.com/attachments/macos_10-13-3_beta_2_release_notes-pdf.742556/
doesn't say anything, just one known issues nothing whats been changed
Score: 3 Votes (Like | Disagree)
justperry Avatar
111 months ago
How about month 13 out of bounds in console, has that been fixed?

Apparently not seeing those any more.
Yup, fixed.
Score: 2 Votes (Like | Disagree)
iapplelove Avatar
111 months ago
Photos STILL crashing?
Mine is, as well as iTunes when I sync and backup devices.
Score: 2 Votes (Like | Disagree)
The Friar Avatar
110 months ago
does anyone know if they fixed the play/pause button?
Not Fixed.
Im using High Sierra Media Key Enabler to temporary fix this problem until Apple does solve this.
Score: 1 Votes (Like | Disagree)