Reality Composer Pro 3 is a standalone tool (no longer bundled inside Xcode) that introduces live on-device preview, GPU-based Compute Graphs, a Lightmapping system for baked indirect lighting, a prototype/instancing workflow, and an AI Assistant that generates 3D objects and materials on demand for visionOS experiences.
ā¢ Live Preview streams scene changes directly to a connected Vision Pro in real time, eliminating build-and-deploy cycles and letting you see lighting and physics exactly as end-users will
ā¢ Lightmaps let you pre-bake indirect lighting (including ambient occlusion and beauty passes) into textures, giving scenes high-quality global illumination at runtime without GPU cost
ā¢ The AI-powered Reality Composer Pro Assistant generates 3D objects and materials from text prompts, letting you prototype and populate scenes in seconds without leaving the tool
Liquid Glass is Apple's new material and visual design language introduced in iOS 27, bringing translucent, refractive glass-like surfaces to system and custom UI elements. It replaces the frosted vibrancy aesthetic with a more dynamic, depth-aware material that responds to content beneath it.
iOS 27 introduces new SwiftUI drag and drop APIs including reorderable, reorderContainer, dragContainer, and configuration modifiers that enable reordering within and across collections, multi-item drag, and fine-grained control over how data is transferred during drag and drop operations.
PaperKit is Apple's full-featured canvas framework ā previously internal-only ā now publicly available in iOS/macOS/visionOS 27. It powers the drawing and markup experience in Notes, Preview, and Freeform, giving developers access to a complete pencil, shapes, images, and text canvas with a rich data model.
In-depth guide
RealityKit & USDKit in iOS 27 āiOS 27 enforces stricter adaptivity requirements for UIKit apps, making iPhone apps fully resizable in iPhone Mirroring and on iPad, while introducing new navigation bar minimization controls, sidebar opt-in for iPhone tab bars, and prominent tab customization.