The method signature of Model::save() has been fixed to match Eloquent.

Added new security config option cms.enableCsrfProtection.

Protected images and their thumbnails are now supported in the back-end.

Editing CMS templates now support form fields that use AJAX.

When inserting a new link the Rich Editor now shows a drop-down list with available pages.

File Upload form widget can now specify mimeTypes to define MIME types that are accepted by the uploader, either as file extension or fully qualified name.

Introduced the October Storm client-side library.

Introduced new MediaFinder form widget.

Improved the back-end administrator permissions and RelationController UI.

The page setting hidden has been renamed to is_hidden, this setting may need to be reapplied for some themes.

FileUpload` form widget has been rebuilt from scratch, it now uses an interface similar to the Media Manager (see Backend > Forms docs).

The |page filter now supports passing an empty string to generate a link to the current page.