Apple this morning released a third public beta for the forthcoming macOS High Sierra 10.13 software update. macOS High Sierra public beta 3 has the same features and changes as the developer-only macOS High Sierra beta 4 release that dropped on Monday.
Before you can install the public beta on your Mac, you must sign up for Apple’s Beta Software Program by signing in with your regular Apple ID at beta.apple.com
Once in, click the “Enroll Your Devices” link to download Apple’s macOS Public Beta Access Utility, which lets your Mac receive public beta software via the Software Update mechanism.
To check if your computer has been successfully enrolled in the beta program, open System Preferences and click the App Store icon. A message will appear saying “your computer is set to receive beta software update” if your Mac is enrolled in the program.
High Sierra introduces new core storage, video and graphics technologies, as well as an enhanced Photos app with a new sidebar, curve-based editing and support for third-party apps like Pixelmator and Photoshop. Stock apps like FaceTime, Messages and Notes have received a few subtle refinements, too.
Originally released as a developer-only preview at WWDC in June, macOS High Sierra comes with the new Apple File System and packs in support for High Efficiency Video Codec (also known as H.265), an updated version of Metal with support for VR applications and external GPU enclosures, Safari 11 with new anti-tracking features, support for flight status information in Spotlight, more natural voices for Siri and more.
High Sierra will release for public consumption this fall across supported Mac models.