What’s New in watchOS

iOS 12 enhances the Cocoa Touch frameworks to improve app performance and deliver exciting new features. Learn about performance best practices, security improvements, tools for supporting multiple screen sizes and shapes, new APIs for iMessage apps, Siri Shortcuts, and Swift refinements. Find out which sessions you won’t want to miss throughout the week.

Hear about the latest advancements in Swift, the safe, fast, and expressive language. Find out about improvements to build times, code size, and runtime performance. Learn how to take advantage of new features in your code that eliminate boilerplate, increase safety and security, and improve your overall development productivity.

Hear about exciting improvements to code coverage, including how you can build your own automation on top of Xcode’s coverage reports. Learn how to dramatically speed up the execution of your tests by leveraging distributed parallel testing, new in Xcode 10.

ARKit 2 makes it easy to develop vivid augmented reality experiences and enable apps to interact with the real world in entirely new ways. Discover how multiple iOS devices can simultaneously view an AR scene or play multiplayer AR games. Learn about new capabilities for tracking 2D images, and see how to detect known 3D objects like sculptures, toys, and furniture.