What SwiftUI updates are coming in iOS 18?

In iOS 18, SwiftUI is receiving several exciting updates. Here are some of the key enhancements:

Graphics Capabilities:
- New mix modifier on color to blend colors by a given amount.
- Extended custom shader feature with precompilation to avoid frame drops.
Scroll Views:
- New APIs for fine-grained control over scroll views.
- onScrollGeometryChange to react to changes in content, offsets, and content size.
- Detect when a view's visibility changes due to scrolling, enabling experiences like auto-playing videos.
Accessibility:
- Additional accessibility information can be added to built-in labels without overriding them.
- New accessibility features such as conditional modifier support and app intent-based accessibility actions.
Xcode Previews:
- New dynamic linking architecture to avoid rebuilding projects when switching between preview and build/run.
- previewable macro to use state directly in previews, reducing boilerplate code.
Text Management:
- Programmatic access to and control of text selection within text editing controls.
TabView:
- New syntax to catch common errors at build time.
- Declare a tab struct with a title, image, and content view, with optional selection value for programmatic selection.

For more detailed information, you can check out the session "What’s new in SwiftUI" (00:00:07).