Apple has released the fifth of betas of iOS 12, tvOS 12, and watchOS 5 to registered developers, a little bit ahead of the usual two-week cycle following the last betas earlier this month. iOS 12 beta 5 features a build number of 16A5339e and is accompanied by release notes outlining resolved issues from the last beta, including fixes to app installation, Phone and FaceTime apps, Screen Time, Siri, and wallet, among many other smaller under-the-hood improvements.
tvOS 12 beta 5 is build 16J5334e and according to the release notes, resolves issues with Accessibility, Apple TV Remote Keyboard, audio output, playback, the Siri Remote, and more. The fifth watchOS 5, build 16R5334f, appears to resolve issues with Apple Pay, Phone and FaceTime, and pairing, among other things.