Apple has released a fourth series of betas for iOS 11, tvOS 11, and watchOS 4, as usual addressing a number of issues in the prior developer previews and moving all three of the operating systems closer to their expected release this fall. The release notes continue to list a large number of known issues that are still pending. Public betas for iOS 11 and tvOS 11 will likely follow within the next day or two.
Apple is also continuing the unusual step of listing compatibility issues with third-party apps in both the iOS 11 and tvOS 11 beta release notes, including Plex, DirectTV, Tweetbot, Square Cash, Citi Mobile, KakaoTalk, SlingTV, Kindle Books, Skype, Pinterest, and Facebook Messenger; it’s unclear why Apple has chosen to single out those particular apps out of the two million apps available on the App Store, since it’s normally expected that problems will occur with third-party apps when using early betas for major iOS releases.