Apple requires developers to prepare their apps for the new updates
Apple has invited developers to prepare their applications in view of the new updates of iOS, watchOS, tvOS, and macOS.
In the mail sent to you directly from Apple, developers are invited to test their applications for the final release of the new operating systems. Tomorrow will be released iOS 10, watchOS 3 and tvOS 10, while macOS Sierra will be available on September 20. Developers should therefore try the latest version of the GM of each operating system, to optimize their applications and submit updates to Apple in order to make them available on the store at the exit of the new operating systems.