iOS 13, iPadOS 13, tvOS 13 and watchOS 6 are all huge releases. While users see a bunch of changes, there is a lot for developers as well. Developers will have some big changes with Swift 5 and the all new SwiftUI and Combine frameworks. Also covered are bringing your iPad apps to the Mac, the new PencilKit framework, CoreML 3, ARKit 3, and the all new Apple Sign-In . We also look at the improvements to Xcode, Diffable Sources, Natural Language Framework, and Core Data and CloudKit changes.