Apple posts new developer betas of macOS, iOS, tvOS, watchOS

Apple has released the first developer betas of macOS 10.13.6, iOS 11.4.1, tvOS 11.4.1, and watchOS 4.3.2. 

Registered developers can download them via Apple’s developer portal (https://developer.apple.com/account/#/welcome). Or they can be downloaded over-the-air once the proper configuration profile has been installed from the Developer Center.