Device Hub is a new standalone app shipping with Xcode 27 that serves as a unified hub for managing, controlling, and configuring both physical devices and simulators. It provides a live interactive screen view, device configuration panels, diagnostics collection, and app data container management — all without needing to open Xcode.
• Replaces scattered device management workflows with a single app: pair devices wirelessly, rotate simulators, change text size/dark mode/location instantly, and manage app data containers from one place
• Enables cross-device bug reproduction workflows — download a real device's app data container and restore it into a simulator to replicate exact conditions (location, text size, appearance) without the physical device
• Ships as a lightweight companion that auto-launches when you build and run in Xcode 27, so every iOS developer immediately encounters it in their daily workflow
iOS 27 adds sectioned queries, codable model attributes, ResultsObserver for non-SwiftUI change observation, and HistoryObserver for reacting to persistent history changes in SwiftData.
iOS 27 expands the App Intents framework with RelevantEntities for contextual content surfacing, EntityCollection for high-performance batch parameter handling, SyncableEntity for cross-device Siri continuity, native Duration/PersonNameComponents parameter types, and @UnionValue for multi-type parameters — plus extended intent execution time limits.
USDKit is a new first-party Swift framework introduced in iOS/macOS 27 that brings native USD scene creation, composition, modification, and export capabilities to Apple platform apps, with deep RealityKit and Spatial Preview integration.
Xcode 27 introduces an agentic localization workflow that lets you ask a coding agent to translate your entire app directly inside Xcode, leveraging String Catalog context — including where and how strings are used — to produce accurate, consistent translations across all languages.