Safari 27 introduces Customizable Select, allowing developers to apply `appearance: base-select` CSS to fully style the native HTML `<select>` element and its picker, including custom HTML content inside `<option>` elements, while retaining built-in accessibility and form semantics.
• Eliminates the need for JavaScript-heavy custom dropdown libraries — a fully branded, accessible select control is now achievable with pure HTML and CSS
• Apps using WKWebView to render forms or product pickers can deliver polished, on-brand UI without sacrificing assistive technology support
• The new `::picker`, `::checkmark`, and `::picker-icon` pseudo-elements give fine-grained styling control that was previously impossible with the native select element
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.
PaperKit is Apple's full-featured canvas framework — previously internal-only — 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.
Xcode 27 introduces a fully customizable toolbar and theme system, untitled scratch projects, coding agent integration directly in the editor, and the new Device Hub for evaluating apps across simulators and physical devices side-by-side.
In-depth guide
SwiftUI & Liquid Glass in iOS 27 →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.