Skip to main content

MacOS High Sierra nears September 25 release — here’s what you need to know

At WWDC 2017, Apple’s Craig Federighi took to the stage to talk about some new additions to MacOS. He noted that this year, Apple will be focusing on perfecting Sierra, in a revision that will be dubbed MacOS ‘High Sierra.’ Now, it’s almost time for High Sierra to exit beta and appear on your Mac. Here’s what you can expect.

Safari improvements

Image used with permission by copyright holder

Refinements are being made to Safari, which Federighi billed as the world’s fastest desktop browser. He went on to claim that Safari will offer speed improvements of up to 80 percent over Google Chrome when it comes to presenting modern JavaScript content.

It’s also set to offer users a more serene browsing experience, with new autoplay blocking functionality. Safari detects sites that play video automatically, and gives the user control over whether they see it or not. It’s also set to receive Intelligent Tracking Protection, which is supposed to prevent sites and services from invasive practices — like stalking users around the web with adverts for products they’ve recently shown an interest in — by utilizing machine learning techniques.

Compressed Mail and photo refinements

Apple has worked on some updates to its Mail app, using compression to reduce the disk space it uses up by 35 percent. In addition, Split View is set to be supported by the Compose window, and Spotlight will be able to determine which messages are most important, and give them priority over other correspondence.

Photos is also set to receive some refinements, like improved facial recognition, and categories that are synchronized across all Apple devices. Expanded physical printing options are also being introduced, like third-party photo printing options.

There are also some major improvements to the editing capabilities of the Photos app, including the ability to fine-tune a color curve, selective color editing, and functionality that will sync edits across various devices.

Under the hood updates to speed things up

Image used with permission by copyright holder

Federighi detailed some more big changes, starting with the news that the 64-bit Apple File System (APFS) would at long last be making its way to MacOS. APFS offers some noteworthy speed improvements, which was demonstrated by a video of a lightning-fast copy process duplicating several HD video files. APFS will be the default file system for MacOS, and offers built-in encryption support.

Support for the HVEC video compression standard is coming to all Macs, and hardware acceleration will be offered on the newest models: the 27-inch Mac from late 2015, the MacBook from early 2016, and the MacBook Pro from 2016. It’s set to be built into apps like Final Cut, Motion, and Compressor, to help video editing pros get the best possible results.

The focus then turned to graphics, as Federighi talked up Apple’s high performance graphics API, Metal. He then announced Metal 2, a “tremendously fast,” highly optimized new iteration of the tool. As well as graphics, machine learning will be powered by Metal.

Apple also detailed how users who are eager to add some extra muscle to their Mac will be able to use Metal alongside external graphics hardware. Starting today, a developer kit is being made available that offers a Thunderbolt 3 enclosure with an AMD Radeon RX 580 graphics card and a USB-C hub. Support for external graphics will subsequently be rolled out to all users.

Federighi went on to announce plans to introduce a version of the Metal API that’s tailored for virtual reality alongside High Sierra. It’s set to help content creators push the limits of hardware being used to run VR experiences, while improvements to software like Final Cut will make it easier to edit spherical video to be viewed on headsets.

Some VR upgrades and High Sierra’s release date

Image used with permission by copyright holder

High Sierra is set to receive several software packages that should help foster VR development on MacOS. Valve is bringing the SteamVR SDK to the platform, and both Unity and Unreal’s VR engines are coming to the Mac, too.

A developer preview of High Sierra was made available to developers following the conference, with a public beta starting up later in June.

Available soon

On September 14, Apple released a golden master candidate of High Sierra to users who were enrolled in the beta, as per a report from Mac Rumors. Providing that no further issues are identified, this will be the same version that’s distributed to everyone once the update goes live.

High Sierra will be rolled out to MacOS systems on September 25. The update is compatible with all systems that are capable of running MacOS Sierra.

Update 9/14/2017: Added final release information.

Editors' Recommendations

Brad Jones
Brad is an English-born writer currently splitting his time between Edinburgh and Pennsylvania. You can find him on Twitter…
Here’s why WWDC could be a ‘critical event’ for Apple
Apple CEO Tim Cook looks at a display of brand new redesigned MacBook Air laptop during the WWDC22

Apple is planning a packed line-up for its Worldwide Developers Conference (WWDC) on June 5, which could become “one of the most critical events in the company’s history.” Aside from the company’s upcoming Reality Pro headset, there will be major updates to Apple’s software systems, including the biggest watchOS revamp since the Apple Watch launched in 2015.

That’s according to a new report from Bloomberg journalist Mark Gurman, who has a history of accurate predictions and leaks surrounding Apple products. It suggests that WWDC will be a chance for Apple to set out its future ambitions for a “post-iPhone era.”

Read more
Common macOS Ventura problems and how to fix them
A MacBook Pro M2 sits on a wooden table with a nice bokeh background.

Apple released macOS Ventura in late October of 2022 bringing several interesting features as well as a few new problems. If you're having trouble after upgrading from macOS Monterey to Ventura, here are some solutions that could help.
AirDrop isn't working

AirDrop is a fantastic feature when it works and incredibly frustrating when it doesn't. A macOS update sometimes leads to AirDrop problems. Luckily a few simple tips can usually correct the problem. The easiest solution is to open the Control Center and toggle AirDrop off and on again. You can also try switching between Contacts Only and Everyone.

Read more
This critical macOS flaw may leave your Mac defenseless
A close-up of a MacBook illuminated under neon lights.

Apple’s macOS operating system has such a strong reputation for security that many people mistakenly believe Macs simply aren’t affected by malware. Well, Microsoft has served up a reminder that that’s not true, as the company has identified a serious vulnerability that affects one of macOS’s most important lines of defense.

According to Bleeping Computer, the bug was first reported by Jonathan Bar Or, Microsoft’s principal security researcher, who named the flaw Achilles. It is now tracked as CVE-2022-42821.

Read more