iOS 27 at WWDC 2026: Everything Developers Need to Know

What Shipped at WWDC 2026

On June 8, 2026, Apple unveiled iOS 27 alongside iPadOS 27, macOS 27 (Golden Gate), watchOS 27, visionOS 27, and tvOS 27. For developers, the headline is not a visual redesign — it is an AI-native platform shift. Siri is being rebuilt as Siri AI with deeper App Intents integration, on-device models are first-class through Foundation Models and the new Core AI framework, and Xcode 27 adds agentic coding assistants backed by multiple model providers.

Public release is scheduled for fall 2026, with developer betas available now through the Apple Developer Program. If you maintain a consumer iOS app, the next 90 days are about migration planning: App Intents adoption, SiriKit deprecation cleanup, and deciding which Apple Intelligence features belong in your roadmap versus your marketing page.

• Siri AI: conversational, context-aware assistant across system surfaces
• Foundation Models framework: multimodal prompts, third-party LLM protocol support
• App Intents 2.0: View Annotations API, testing framework, richer entities
• Core AI: on-device model execution optimized for Apple Silicon
• Xcode 27: agentic coding, multi-turn planning, integrated model providers

Platform Improvements That Affect Every App

Beyond AI, iOS 27 continues Apple's performance push. Swift 6.2 concurrency checks are stricter in Xcode 27, Game Porting Toolkit 4 expands Metal tooling, and CarPlay, Lock Screen, and media APIs received incremental upgrades that matter for automotive, fitness, and audio products.

Privacy and parental controls also tightened — apps targeting younger audiences need to review the new Family Controls APIs and data-collection disclosures before submission. App Store review notes for iOS 27 betas already reference App Intents coverage for apps claiming Siri integration.

Our Recommended 90-Day Plan

We are running iOS 27 readiness audits for clients this quarter. The sequence that works: audit SiriKit usage and map each intent to App Intents; prototype one Foundation Models feature behind an availability check; upgrade CI to Xcode 27 and fix Swift 6 warnings; run App Intents tests on physical devices running the beta.

Defer big UI rewrites until stable beta 3 unless you are chasing a launch-day Siri AI spotlight. The wins are in integration depth, not pixel changes.