WWDC25: What’s new in Xcode 26 | Apple

Discover the latest productivity and performance advancements in Xcode 26. Learn how to leverage large language models in your development workflow. Explore editing and debugging enhancements, improved performance and testing tools, and Swift Build - the open-source build system engine used by Xcode.

Explore related documentation, sample code, and more:
Analyzing CPU usage with the Processor Trace instrument: developer.apple.com/documentation/Xcode/analyzing-…
Measuring your app’s power use with Power Profiler: developer.apple.com/documentation/Xcode/measuring-…
Enabling enhanced security for your app: developer.apple.com/documentation/Xcode/enabling-e…
Understanding and improving SwiftUI performance: developer.apple.com/documentation/Xcode/understand…
Xcode updates: developer.apple.com/documentation/Updates/Xcode
Say hello to the new look of app icons: developer.apple.com/videos/play/wwdc2025/220
Create icons with Icon Composer: developer.apple.com/videos/play/wwdc2025/361
Code-along: Explore localization with Xcode: developer.apple.com/videos/play/wwdc2025/225
What’s new in Swift: developer.apple.com/videos/play/wwdc2025/245
Optimize CPU performance with Instruments: developer.apple.com/videos/play/wwdc2025/308
What’s new in SwiftUI: developer.apple.com/videos/play/wwdc2025/256
Optimize SwiftUI performance with Instruments: developer.apple.com/videos/play/wwdc2025/306
Profile and optimize power usage in your app: developer.apple.com/videos/play/wwdc2025/226
Demystify explicitly built modules: developer.apple.com/videos/play/wwdc2024/10171
Record, replay, and review: UI automation with Xcode: developer.apple.com/videos/play/wwdc2025/344
Explore UI animation hitches and the render loop: developer.apple.com/videos/play/tech-talks/10855

00:00 - Introduction
00:49 - Optimizations
01:42 - Workspace and editing
10:37 - Intelligence
17:47 - Debugging and performance
27:50 - Builds
30:15 - Testing
36:10 - Wrap-up

More Apple Developer resources:
Video sessions: apple.co/VideoSessions
Documentation: apple.co/DeveloperDocs
Forums: apple.co/DeveloperForums
App: apple.co/DeveloperApp