Learn about the major updates and changes introduced in Next.js 15 through an 18-minute video breakdown covering essential modifications to the framework's architecture. Explore the overhauled caching system, breaking changes in async request APIs, and new features including improved TypeScript support, enhanced server action security, and the Form component. Discover how to migrate existing code to accommodate these updates, understand the integration with React 19, and learn about performance improvements through Turbopack. Follow along with detailed explanations of static route indicators, better error messages, ESLint 9 support, and various minor enhancements that impact Next.js development workflows.