Explore the latest developments in Swift programming language and iOS app development in this GOTO Copenhagen 2019 conference talk. Dive into key updates including ABI stability in Swift 5, the introduction of SwiftUI and Combine frameworks, and improvements in Swift packaging. Learn about new features such as raw strings, enhanced string interpolation, keypaths, the Result type, and dynamic language capabilities. Discover how these advancements impact iOS and Mac app development, and gain insights into function builders and the Picture Language. Presented by Daniel H Steinberg, author of the best-selling book "A Swift Kickstart," this talk provides a comprehensive overview of Swift's evolution and its implications for mobile developers.