Apple has released a third watchOS 4.3 beta along with new public betas for iOS 11.3 and tvOS 11.3, matching the third developer betas released yesterday. While the release notes are sparse, it appears from the betas that watchOS 4.3 will be bringing iPhone music control back to the Apple Watch and allow Nightstand mode to work in portrait orientation. The latest beta also appears to resolve issues with weather information in Greater China and accuracy…