You can learn about what's new in macOS High Sierra by clicking here.
The macOS 10.13 Developer Preview supports
• MacBook or iMac: Late 2009 or newer
• MacBook Air, MacBook Pro, Mac mini, or Mac Pro: 2010 or newer
To Enroll Your Mac in the Apple Developer Program
Download the macOS Developer Beta Access Utility from the link below and run the installer. Follow the onscreen instructions to enroll your Mac.
To check if your Mac is enrolled in the Apple Beta Software Program, open the App Store pane
in System Preferences. for the Mac App Store. If your Mac is enrolled, the message “Your computer is set to receive beta software update” is shown.
Install the macOS Developer Beta
1. Open the Mac App Store.
2. Download macOS Developer Beta.
3. Open the macOS installer app after it has finished downloading.
4. Follow the instructions to install the beta version of macOS.
Install subsequent updates from the Mac App Store
When a new macOS Developer Beta is available, you receive a notification and can install it from the Updates pane in the Mac App Store.
In this beta, Apple has fixed several issues relating to APFS:
• Fixed an issue that prevented enabling FileVault on APFS volumes.
• Fixed an issue where the encryption policy used for unencrypted APFS volumes that are converted to FileVault could cause the system to select the wrong block offset during the encryption process. Affected volumes need to be re-encrypted. Encrypted HFS+ volumes that have are converted to APFS are unaffected.
• Fixed an issue where an APFS container on a Fusion drive could have only 1 macOS 10.13 volume.
• Fixed an issue where APFS systems with FileVault enabled could not reset their password with iCloud. (32818928)
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