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.
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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.
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