This is brand new version compatible with eZPublish 4.x of old extension developed by my long time ago: http://projects.ez.no/object_content_class_change, which is still working with eZPublish 3.x

New release has been tested OK to work with multilingual content, which makes extension very useful for administrators and developers on sites, that must do some bigger content evolutions or changes.

It's a first of set of extensions, that will be released and maintained together as "eZ Admin's tools".