WordPress 4.9.3 is now available.
This maintenance release fixes 34 bugs in 4.9, including fixes for Customizer changesets, widgets, visual editor, and PHP 7.2 compatibility. For a full list of changes, consult the list of tickets and the changelog.
Download WordPress 4.9.3 or visit Dashboard → Updates and click “Update Now.” Sites that support automatic background updates are already beginning to update automatically.