Three new application extensions are available;
A new \IPS\Application::getRootPath() method is available to return the path to application files regardless of the server environment, which should be used instead of \IPS\ROOT_PATH
The WYSIWYG editor now includes an "allowStockPhotos" options array parameter. A boolean value is accepted and will determine whether or not the editor can have images attached via the Pixabay stock photo picker if also enabled in community enhancements.
Additional protections are now required for admin control panel controllers to protect against cross site request forgery attacks. The steps required are described in the security considerations guide.