Xcode 16.4 Released with Swift 6.1 and Latest Apple SDKs

Apple has officially launched Xcode 16.4, bringing support for Swift 6.1 and the latest SDKs across its entire platform lineup. This update equips developers with everything needed to build apps for the full spectrum of Apple devices, from iPhones and iPads to the Apple Vision Pro and Macs.

What's New in Xcode 16.4

• ✅ Swift 6.1 support
  Includes improvements in performance, concurrency, and better compile-time diagnostics.

• 📦 Updated SDKs

  • iOS 18.5

  • iPadOS 18.5

  • macOS Sequoia 15.5

  • watchOS 11.5

  • tvOS 18.5

  • visionOS 2.5

Development Highlights

Xcode remains Apple’s all-in-one IDE for creating apps across platforms. The new version continues to refine key tools, including:

• AI-powered code completions using on-device machine learning models trained for Swift and Apple SDKs

• SwiftUI Previews, which let you see real-time UI changes as you code

• Enhanced debugging, including conditional breakpoints and UI inspection

• Test-driven workflows, performance tuning, and seamless app deployment to TestFlight and the App Store

Why It Matters

This release helps developers:

• Take full advantage of new platform features in Apple’s spring OS updates

• Start preparing for iOS 26/macOS 26 and beyond, expected to debut at WWDC 2025

• Leverage Swift 6.1's concurrency improvements and tighter compiler checks to write safer, faster code

Bottom line: Xcode 16.4 is a critical update for Apple developers, offering the tools and SDKs needed to build future-ready apps. With Swift 6.1 and new platform APIs in hand, the groundwork is now laid for developers to explore what’s coming next in Apple’s ecosystem—especially with WWDC just around the corner.