React v16.9.0 and the Roadmap Update

Today we are releasing React 16.9. It contains several new features, bugfixes, and new deprecation warnings to help prepare for a future major release. New Deprecations Renaming Unsafe Lifecycle Methods Over a year ago , we've announced that unsafe lifecycle methods are getting renamed: → → → React 16.9 does not contain breaking changes, and the old names continue to work in this release.