When was iOS 26 released?

iOS 26 was released on Sep 22, 2025.

What are the breaking changes in iOS 26?

Deprecated NSPersistentStore option keys removed after decade-long deprecation period; apps rebuilt with iOS 26 SDK will error; Legacy Push to Talk Entitlement com.apple.developer.pushkit.unrestricted-voip.ptt no longer supported; migrate to Push to Talk framework from iOS 16; Default minimum TLS version for URLSession and Network frameworks changed from 1.0 to 1.2 for apps linked on iOS 26 or later; Named semaphores now scoped to single development team; sem_open and sem_unlink no longer observe semaphores from different Team IDs.

What deprecations are in iOS 26?

Interpolating non-localized types into LocalizedStringResource now displays deprecation warning; wrap unlocalized values in String(describing:); NSPersistentStore cloud sync APIs deprecated in favor of NSPersistentCloudKitContainer (iOS 13) and SwiftData (iOS 17).

iOS • Sep 22, 2025

26 Developer Guide

What's New for Developers

iOS 26 introduces Foundation Models framework for on-device LLM access with guided generation and tool calling, alongside Apple Intelligence features for image generation and writing assistance. Major updates include Health app medication tracking APIs, Metal 4 graphics support, and iCloud syncing for Journaling Suggestions. Developers must address breaking changes including removed NSPersistentStore options, legacy Push to Talk entitlement removal, and TLS 1.2 minimum requirement for network connections.

Highlights

Foundation Models framework provides on-device LLM access with guided generation and tool calling support
Apple Intelligence features including Image Playground, Genmoji, and Writing Tools now available
Ad attribution enhancements: attribution windows by ad network type and cooldown period configuration
Health app medication tracking API and workout session APIs now available on iOS and iPadOS
Metal 4 support with improved temporal upscaling and denoising for graphics rendering
Journaling Suggestions now sync over iCloud from iPhone to iPad with smart notifications
App Store Accessibility Nutrition Labels help users discover accessibility features before download

Breaking Changes

Deprecated NSPersistentStore option keys removed after decade-long deprecation period; apps rebuilt with iOS 26 SDK will error
Legacy Push to Talk Entitlement com.apple.developer.pushkit.unrestricted-voip.ptt no longer supported; migrate to Push to Talk framework from iOS 16
Default minimum TLS version for URLSession and Network frameworks changed from 1.0 to 1.2 for apps linked on iOS 26 or later
Named semaphores now scoped to single development team; sem_open and sem_unlink no longer observe semaphores from different Team IDs

Deprecations

Interpolating non-localized types into LocalizedStringResource now displays deprecation warning; wrap unlocalized values in String(describing:)
NSPersistentStore cloud sync APIs deprecated in favor of NSPersistentCloudKitContainer (iOS 13) and SwiftData (iOS 17)

Read the full deep dive article: Is SwiftUI finally as fast as UIKit in iOS 26?

Individual Author Mar 9, 2026

Is SwiftUI finally as fast as UIKit in iOS 26?

Jacob Bartlett puts SwiftUI and UIKit through the ultimate stress test: a feed of 22,000 animated GIFs running at 120fps. The results might surprise you.

Scroll Performance SwiftUI

26.4 Feb 24, 2026 Release Notes → 26.3 Dec 17, 2025 Release Notes → 26.2 Oct 29, 2025 Release Notes → 26.1 Sep 29, 2025 Release Notes → 26 Sep 22, 2025 Release Notes → 18.6 Jul 21, 2025 Release Notes → 18.5 May 12, 2025 Release Notes → 18.4 Mar 31, 2025 Release Notes → 18.3 Jan 27, 2025 Release Notes → 18.2 Dec 11, 2024 Release Notes → 18.1 Oct 28, 2024 Release Notes →

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26 Developer Guide

What's New for Developers

Highlights

Breaking Changes

Deprecations

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Is SwiftUI finally as fast as UIKit in iOS 26?

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