"Signal Forms, an experimental library for managing forms state with signals, provides a new scalable, composable, and reactive forms experience built on Signals. With Signal Forms, the Form model is defined by a signal that automatically syncs with the form fields bound to it. This allows for an ergonomic developer experience with full type safety for accessing form fields. Centralized schema-based validation logic is built-in."
"Also featured in Angular v21 is a developer preview of Angular Aria, a library for common UI patterns. The library is a collection of headless, accessible directives that implement common WAI-ARIA patterns. These directives handle keyboard interactions, ARIA attributes, focus management, and screen reader support, according to the Angular team. Developers just have to provide the HTML structure, business logic, and CSS styling. To start, developers have access to eight UI patterns encompassing 13 components that are completely un-styled and can be customized."
Signal Forms introduces a signal-based Form model that automatically syncs with bound fields, offering ergonomic access, type safety, and centralized schema-based validation. Zoneless change detection, matured to stability by Angular v20.2, removes reliance on zone.js and yields better core web vitals, native async-await behavior, improved ecosystem compatibility, smaller bundles, and easier debugging and control. Angular v21 provides a developer preview of Angular Aria, a set of headless, accessible directives for common WAI-ARIA UI patterns covering eight patterns and 13 unstyled components. Vitest is promoted to the default, stable test runner in Angular v21.
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