CKEditor 5 is out and coming soon to a Drupal site near you, as CKEditor 4 is reaching it's planned end-of-life next year. If you've only customized your CKEditor experience via the Drupal GUI then you're in good shape, but if you've gone beyond that to customize CKEditor via a Drupal module (whether just customizing unexposed CKEditor settings, or adding in third-party CKEditor plugins), you'll need to know about the upcoming changes with Drupal 10 and how they'll affect you.
This session will provide an overview of the changes on both the CKEditor side and the Drupal side, and a look at what you'll need to do to get your custom modules updated to work with CKEditor 5.