Apple has just released macOS High Sierra 10.13 GM (build 17A362a) candidate for developers to download and test. The golden master candidate release comes ahead of the public launch of macOS High Sierra on September 25.
Apple released the GM seeds of iOS 11, watchOS 4 and tvOS 11 shortly after their iPhone X keynote. These public release are set to be available on September 19.
Apple today also released updated App Store guidelines, noting “The App Store Review Guidelines have been updated. We review all apps submitted to the App Store in an effort to determine whether they are reliable, perform as expected, and are free of offensive material. As you plan and develop your app, make sure to use these updated guidelines.”
Update: clarified to note this is a GM candidate release, not final GM.