WWDC 2017 covered updates to iOS, macOS, tvOS, watchOS, and announcements around new hardware. Key highlights included iOS 11 with an updated control center and drag and drop, improvements to Siri, Core ML for integrating machine learning models, ARKit for augmented reality, and the new HomePod smart speaker. The conference also previewed updates to Xcode and Swift as well as new iPad Pro and iMac Pro devices.