Shortly after its WWDC 2018 keynote address ended on Monday, Apple seeded the first betas of iOS 12, macOS Mojave, tvOS 12 and watchOS 5 to developers. Registered developers can download the new updates from the Dev Center, or over-the-air after installing the necessary certificates.
Apple seeds first developer betas of iOS 12, macOS Mojave, tvOS 12 and watchOS 5