Apple's WWDC26 iPadOS guide covers what's new in iPadOS 27 for developers. Key highlights include the Foundation Models framework offering native Swift access to on-device and cloud AI models (Claude, Gemini) with multimodal prompts, Dynamic Profiles, and a new Evaluations framework. Core AI is a new OS-level framework for running custom on-device models with zero server dependencies. App Intents gains entity schemas for Spotlight integration, View Annotations API, and a dedicated testing framework. Platform improvements span SwiftUI (document-based apps, lazy loading), UIKit (iPhone Mirroring layouts), and WidgetKit (App Intents customization). Game Porting Toolkit 4 adds agentic coding skills for Metal porting, and PencilKit gains multilingual handwriting recognition alongside a new PaperKit writing surface.
