There's a codemod [1] to automate most of the code changes needed, and a comprehensive migration guide [2]. [1] https://mui.com/guides/migration-v4/#preset-saf

There's a codemod [1] to automate most of the code changes needed, and a comprehensive migration guide [2]. [1] https://mui.com/guides/migration-v4/#preset-safe https://mui.com/guides/migration-v4/#preset-safe [2] https://mui.com/guides/migration-v4/ https://mui.com/guides/migration-v4/ Feedback so far has been positive...