Safari 12.1.1, iOS 12.3, tvOS 12.3, watchOS 5.2.1, Apple TV 7.3 released

Safari 12.1.1 includes security fixes and is available for macOS 10.13.6, 10.12.6 and included in macOS 10.14.5.
See post for iOS/tVOS/watchOS/Apple TV 7.3 release notes with changes, fixes and new features and related articles on security fixes. (Apple TV 7.3 update for 3rd Generation Apple TVs includes WiFi and Bluetooth security fixes.)