Along with iOS 11 developer beta 4, Apple released macOS High Sierra developer beta 4 on Monday.
macOS High Sierra includes improvements to Mail and Safari, more efficient file transfer performance, improved security, augmented and virtual reality support, new Siri voices, HEVC video support, and more.
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Downloading and installing the developer beta requires and Apple Developer account and a compatible Mac. Since High Sierra is still very much a beta product, don’t install it on mission-critical machines.
The next public beta will likely drop in the next few days.
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