WWDC26 brings several notable SwiftUI improvements. Liquid Glass design changes are adopted automatically. A new 'prominent' tab role enables trailing-separated tabs. The swipeActions modifier now works beyond List — any container (ScrollView, lazy stacks, custom layouts) can support swipe actions via the new swipeActionsContainer modifier. Drag-and-drop reordering is simplified with reorderContainer and reorderable modifiers. Navigation gains a cross-fade transition option alongside zoom. AsyncImage now supports caching with configurable URLSession. New toolbar modifiers offer finer control over visibility priority, overflow menus, and pinned trailing items. Document-based apps receive a refreshed look and performance boost, and Xcode adds SwiftUI-specific agentic coding skills.
