The upgrade from CKEditor 3 to 4.5.7 provides many advantages in stability, bugfixes and the opportunity to expand functionality with minimal migration costs. As the bugfixes and new functionality have been integrated into the standard CKEditor API and plugins, there is now the possibility to use CKEditor functionality out of the box.
This section will outline the steps needed to take in order to upgrade standard and custom plugins to CKEditor 4. At the end is a list of CoreMedia bug reports which have been solved with this upgrade.