Apple restarts beta cycle with first developer builds of iOS 12.4, tvOS 12.4, watchOS 5.3, macOS 10.14.6

After releasing iOS 12.3 and its other operating system updates to the public on Monday, Apple has restarted the beta testing process once more, this time issuing the first builds of iOS 12.4, tvOS 12.4, watchOS 5.3 and macOS 10.14.6 to developers for testing.