Apple Seeds Second Beta of macOS High Sierra to Developers

Apple today seeded the second beta of an upcoming macOS High Sierra update to developers for testing purposes, a little over two weeks after introducing the new software and releasing the first beta at its 2017 Worldwide Developers Conference.

The new beta can be downloaded from the Apple Developer Center, and once installed, subsequent betas will be available through the Software Update mechanism in the Mac App Store.


macOS High Sierra introduces new core storage, video, and graphics technology. The update supports the new Apple File System (APFS) and High Efficiency Video Codec (HEVC), plus it introduces an updated version of Metal with support for VR and external GPUs.

Photos is being updated with a new sidebar that makes it easier to access editing tools and albums, and there are new editing options like Curves and Selective Color. It also supports external editing apps like Photoshop and Pixelmator, saving changes made in those apps.

Improvements to Safari are coming, including speed enhancements and a new feature that puts a stop to 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 only for registered developers, but Apple plans to make a public macOS High Sierra beta available later this summer, giving public beta testers a chance to try out the software before it sees a public release in the fall.

Related Forum: macOS High Sierra

Popular Stories

iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching in Three Months With These 12 New Features

Saturday June 14, 2025 5:45 pm PDT by
The iPhone 17 Pro and iPhone 17 Pro Max are three months away, and there are plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of June 2025:Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone X through iPhone 14 Pro have a...
iPadOS 26 App Windowing

Apple Explains Why iPads Don't Just Run macOS

Friday June 13, 2025 7:46 am PDT by
iPadOS 26 allows iPads to function much more like Macs, with a new app windowing system, a swipe-down menu bar at the top of the screen, and more. However, Apple has stopped short of allowing iPads to run macOS, and it has now explained why. In an interview this week with Swiss tech journalist Rafael Zeier, Apple's software engineering chief Craig Federighi said that iPadOS 26's new Mac-like ...
Logitech Logo Feature

Logitech Announces Two New Accessories for WWDC

Friday June 13, 2025 7:22 am PDT by
Alongside WWDC this week, Logitech announced notable new accessories for the iPad and Apple Vision Pro. The Logitech Muse is a spatially-tracked stylus developed for use with the Apple Vision Pro. Introduced during the WWDC 2025 keynote address, Muse is intended to support the next generation of spatial computing workflows enabled by visionOS 26. The device incorporates six degrees of...
iphone 16 pro models 1

17 Reasons to Wait for the iPhone 17

Thursday June 12, 2025 8:58 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we often get rumored features months ahead of launch. The iPhone 17 series is no different, and we already have a good idea of what to expect from Apple's 2025 smartphone lineup. If you skipped the iPhone...
iOS 26 Feature

Apple Seeds Revised iOS 26 Developer Beta to Fix Battery Issue

Friday June 13, 2025 10:15 am PDT by
Apple today provided developers with a revised version of the first iOS 26 beta for testing purposes. The update is only available for the iPhone 15 and iPhone 16 models, so if you're running iOS 26 on an iPhone 14 or earlier, you won't see the revised beta. Registered developers can download the new beta software through the Settings app on each device. The revised beta addresses an...
Mac Studio Feature

Apple Begins Selling Refurbished Mac Studio With M4 Max and M3 Ultra Chips at a Discount

Thursday June 12, 2025 10:14 am PDT by
Apple today added Mac Studio models with M4 Max and M3 Ultra chips to its online certified refurbished store in the United States, Canada, Japan, Singapore, and many European countries, for the first time since they were released in March. As usual for refurbished Macs, prices are discounted by approximately 15% compared to the equivalent new models on Apple's online store. Note that Apple's ...
m4 macbook air pink

Apple Now Selling Refurbished M4 MacBook Air Models

Friday June 13, 2025 3:34 pm PDT by
Apple today added M4 MacBook Air models to its refurbished store in the United States, making the latest MacBook Air devices available at a discounted price for the first time since they launched earlier this year. Both 13-inch and 15-inch MacBook Air models are available, with Apple offering multiple capacities and configurations. The refurbished devices are discounted by approximately 15...

Top Rated Comments

Apple_Robert Avatar
104 months ago
Reviews for a Developer's Beta? Seriously?
I thought my humor and apropos smiley made it obvious I was kidding.
Score: 9 Votes (Like | Disagree)
RadioGaGa1984 Avatar
104 months ago
I've been running DP1 on my 2015 rMBP since day 1. It's been incredibly stable. I've had not one issue to speak of.
Score: 4 Votes (Like | Disagree)
godrifle Avatar
104 months ago
I installed on an external USB3 SSD on top of Sierra 10.12.6 beta 4 (I think), and DP1 went smooth as butter. But, then I noticed it didn't update the SSD to APFS. It *did* put it in an APFS container, but the volume was still HFS+. So, I tried to use Disk Utility in Restore 10.13 restore mode, and selected "Update to APFS" and viola... it refused to boot. In fact, if I have the USB drive connected, my Mac refuses to boot no matter what. The only recourse was to blow away the volume, destroy the APFS container, blah blah blah. I then used command line to create APFS container and volume, but can't install directly to the APFS volume. Weird. Will see if DP2 exhibits the same results.
Score: 4 Votes (Like | Disagree)
Apple_Robert Avatar
104 months ago
* After starting a software update, the installation progress may not be displayed for up to fifteen minutes. Do not reboot your Mac during this time.


* The Mac may be stuck at a black screen with a cursor then first time you log in after a software update.

Workaround: Restart your Mac.

Score: 3 Votes (Like | Disagree)
Apple_Robert Avatar
104 months ago
Problems with launching Microsoft Office 15.35 have been resolved.


* There is a known issue where APFS systems with FileVault enabled cannot reset their password with iCloud
* Resizing APFS containers is currently not supported in Disk Utility
* Workaround: In Terminal, use the diskutil tool to resize APFS containers.
* Reinstalling macOS 10.13 from the Recovery OS no longer requires using Disk Utility to unlock your FileVault-encrypted volume.


Score: 3 Votes (Like | Disagree)
Lunfai Avatar
104 months ago
Sketch.app working better?
Mine's fine but I'm not rolling APFS because that's where the problem lies.
Score: 2 Votes (Like | Disagree)