September 16, 2019
You can now submit apps built with Xcode 11 GM seed 2 (11A420a) using the iOS 13 SDK and watchOS 6 SDK to the App Store. Apps built with Xcode 11 GM seed (11A419c) can no longer be uploaded to App Store Connect. Please note that apps built with Xcode 11 GM seed (11A419c) using named colors may experience lookup failures (with no value returned) when they run on iOS 11 or earlier. If you’ve uploaded an app that uses named colors, you’ll need to rebuild your app with Xcode 11 GM seed 2 (11A420a), test on iOS 11 or earlier, and resubmit to the App Store.