Immutability in React is changing, particularly with the introduction of Immer, a library that makes it easy to work with immutable data structures while maintaining interoperability with other libraries. The concept of immutability was first introduced in 2013 with Om and later popularized by Immutable.js in 2015. However, these approaches had limitations, such as interoperability issues with other JavaScript libraries. Immer addresses this issue by providing a more lightweight and simple way to work with immutable data structures, making it easier for developers to adopt and use. The philosophy behind Immer aligns well with React's principles, focusing on temporal mutability, interoperability, and debugging, which enables fine-grained control over the component lifecycle and allows for better debugging and tracing of UI updates. Additionally, Immer has gained a significant following within the React community and is being used in various projects to reduce boilerplate code and improve performance.