Angular 21 Rolls Out Modern Testing, Headless A11y Components, and AI Tools

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Angular v21 brings signal-driven forms, new accessibility tools, AI-powered CLI features, zoneless apps, and modern testing with Vitest.
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Angular v21 isn’t about one headline feature — it’s a broad shift toward reactive patterns, accessible UI, AI-aware tooling, modern testing, and simpler, zoneless change detection. Together, these updates mark Angular’s move toward a more predictable, modern, and developer-aligned framework.