Apple released iOS 12 GM to Developers on September 12th and the full version to the Public on September 17th, Apple has now released beta 1 of iOS 12.0.1 to registered developers. Apple addedGroup FaceTime is back in beta 1.
Apple also released WatchOS 5.1 beta 1 and tvOS beta 1 to registered developers.
In this update Apple is releasing its own take on Unicode 11.0 emojis. In Beta 1 Apple brought back Group FaceTime for up to 32 people.
Users who are registered developers can update via ota or using iTunes beta profile.