Apple Seeds Ninth Beta of macOS High Sierra to Developers

Apple today seeded the ninth beta of an upcoming macOS High Sierra update to developers for testing purposes, four days after seeding the eighth beta and more than two months after introducing the new software at the 2017 Worldwide Developers Conference.

The ninth beta of macOS High Sierra can be downloaded from the Apple Developer Center or over-the-air using the Software Update mechanism in the Mac App Store.

macOS High Sierra builds on features first introduced in macOS Sierra, focusing on new storage, video, and graphics technology. It brings a new Apple File System (APFS), High Efficiency Video Codec (HEVC), and an updated version of Metal with support for VR and external GPUs.


Several apps are gaining new features in macOS High Sierra. The Photos app features a new sidebar to make it easier to access editing tools and albums, and there are new filters and editing options like Curves and Selective Color. Photos also supports external editing apps like Photoshop and Pixelmator, saving changes made in those apps back to Photos, and it interfaces with new third-party printing services.

Safari is gaining speed enhancements, an option to prevent autoplay videos, and a new feature that cuts down on cross-site data tracking. Siri in macOS High Sierra has expanded music capabilities and a new, more natural voice, and Spotlight supports flight status information. There are also improvements to iCloud, FaceTime, Messages, and Notes.

macOS High Sierra is available for both registered developers and public beta testers and will see a public release in the fall. For a complete overview of changes coming in macOS High Sierra, make sure to check out our dedicated macOS High Sierra roundup.

Related Forum: macOS High Sierra

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Top Rated Comments

MrGimper Avatar
89 months ago
I hope this ships in September. I need it.
Just as 100 other people say “No thanks, I’ll stick with Snow Leopard” :-)
Score: 22 Votes (Like | Disagree)
JeffyTheQuik Avatar
89 months ago
Autostarting videos - The PopUps of the late 2010's.

I hate those freaking things.
Score: 10 Votes (Like | Disagree)
BornAgainMac Avatar
89 months ago
I hope this ships in September. I need it.
Score: 9 Votes (Like | Disagree)
K4LK Avatar
89 months ago
Score: 6 Votes (Like | Disagree)
McFreggle Avatar
89 months ago
The "one week after seeding the eighth beta" in the intro should be "four days after seeding the eighth beta".

Bad copy-paste :-)
Score: 5 Votes (Like | Disagree)
centauratlas Avatar
89 months ago
I hope this ships in September. I need it.
Normally I update at least one machine right away. While I am waiting to get it, I am going to hold off a bit on this one due to the file system (APFS) changes. Hopefully the beta resolves any issues, but I'm going to be cautious.
Score: 4 Votes (Like | Disagree)