Apple Seeds Third macOS High Sierra 10.13.1 Beta to Developers - MacRumors
Skip to Content

Apple Seeds Third macOS High Sierra 10.13.1 Beta to Developers

by

Apple today seeded the third beta of an upcoming macOS High Sierra update to developers, a little over a week after releasing the second macOS High Sierra 10.13.1 beta and nearly a month after releasing the new High Sierra operating system to the public.

The third macOS High Sierra 10.13.1 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 10
macOS High Sierra 10.13.1 appears to focus on bug fixes, performance improvements, security enhancements, and other under-the-hood changes, but it also introduces a range of new Unicode 10 emoji like crazy face, pie, pretzel, t-rex, vampire, exploding head, face vomiting, shushing face, love you gesture, brain, scarf, zebra, giraffe, fortune cookie, pie, hedgehog, and more.

The new emoji are also available in iOS 11.1 and watchOS 4.1.

macOS High Sierra is a major update that introduces APFS, a new more modern file system, HEIF and HEVC photo and video encoding improvements for smaller file sizes without compromising quality, Metal 2, and several new features for Safari, like autoplay blocking for videos and Intelligent Tracking Prevention to better protect user privacy.

For more on what's new in macOS High Sierra, make sure to check out our macOS High Sierra roundup.

Related Forum: macOS High Sierra

Popular Stories

iOS 27 Next to iPhone

Here's When iOS 27 Rolls Out Today in Every Time Zone [Update: It's Out]

Sunday September 13, 2026 3:00 am PDT by
Update 10:04 a.m.: iOS 27 is rolling out now, though it may take a bit for all users to see it, so keep checking! Apple is about to release iOS 27, which will finally deliver more advanced Siri AI capabilities as well as a variety of other refinements, improvements, and new features to iPhones. It's Apple's biggest software update of the year, and Apple announced at Wednesday's iPhone event...
Read Full Article • 151 comments
iOS 27 Icon iPhone

iOS 27 Available Now With These 8 New Features

Monday September 14, 2026 9:00 am PDT by
Update — 10 a.m. Pacific Time: Apple has released iOS 27. During its iPhone 18 Pro and iPhone Duo event last week, Apple announced that iOS 27 will be released widely on Monday, September 14. iOS 27 should be available around 10 a.m. Pacific Time / 1 p.m. Eastern Time today via the Settings app, under General → Software Update. Below, we have highlighted eight new features and...
Read Full Article • 111 comments
deep black iphone 18 pro

Apple Says iPhone 18 Pro Max Sold in U.S. Differs in One Way

Saturday September 12, 2026 3:27 pm PDT by
As noted by Nicolas Lellouche, who writes for the French tech website Numerama, Apple has updated its tech specs pages for the iPhone 18 Pro and iPhone 18 Pro Max to clarify which models are equipped with its new C2 cellular modem and where. Apple now says the iPhone 18 Pro has a C2 modem worldwide, while the iPhone 18 Pro Max uses the chip in every country except for the U.S. According...
Read Full Article • 142 comments

Top Rated Comments

scrapesleon Avatar
scrapesleon
116 months ago
safari keeps crashing please fix
Score: 9 Votes (Like | Disagree)
MacGizmo Avatar
MacGizmo
116 months ago
Safari have bug, new tab and click any link in bookmark ( favourite). Freezer and lag. Please see and fix.
Who are you talking to? This is a beta. If you have a problem, use the Feedback app installed in the Dock and send you complaint to Apple.
[doublepost=1508321243][/doublepost]
It's kind of amazing the things they can break in such minor updates. o_O
It's a minor update to a major BETA! Things are SUPPOSED to be broken. If you run a beta OS, it's your job to find the bugs and report them.
Score: 8 Votes (Like | Disagree)
370zulu Avatar
370zulu
116 months ago
Still nervous about upgrading from Sierra on a mid-2015 rMBP 15 (MJLT2LL/A).
Score: 5 Votes (Like | Disagree)
M
mdatwood
116 months ago
I'm having a lot of trouble with external monitors and crashes while the computer is on sleep mode. Reinstalled twice, problems persist. MacBook Pro (Retina, 13-inch, Early 2015) / Thunderbolt Display / High Sierra 10.13
Same. High Sierra runs great until I start using external monitors. The UI goes weird and the OS eventually crashes. After rebooting it works fine.
Score: 4 Votes (Like | Disagree)
chucker23n1 Avatar
chucker23n1
116 months ago
You are aware CDN's are also subject to DNS propagation, right?
DNS propagation of what? Why would there be any new DNS entries here? It's a blob of data that's being propagated through a CDN. Nothing to do with DNS.
[doublepost=1508295377][/doublepost]
Well that was snappy.

Still no Mac Blu-Ray player though.
Also in other news of never-gonna-happen, no PowerBook G5.
Score: 4 Votes (Like | Disagree)
warriors2017 Avatar
warriors2017
116 months ago
I'm on a 2013 Air and High Sierra is working perfectly.
Obviously, you're not trying hard enough ;-)
Score: 4 Votes (Like | Disagree)
Read All Comments