Next.js version 2.0 introduces several new features and improvements, including a programmatic API for dynamic routing and server-side rendering, support for React CSS, pre-fetching for improved performance, and more. The framework is designed to be easy to use with only one command for development, making it simple and small. Next.js also allows developers to bring their own React implementations, providing flexibility and control over the build process. The new version includes features such as scalable hot module replacement, smaller builds, and full extensibility, making it a powerful tool for building fast and efficient web applications.