Tobias Schlitt has pointed out a new article he's written up that acts as an introduction to the features of the new ORM component of the eZ Components application framework - the PersisteneObject.

For me the coolest feature of PersistentObject is, that the component does not require you're ORM enabled classes to inherit from a certain base to allow your objects to be stored in a database (made persistent).

This new object gives you a "wapper" of sorts to make any of the pre-existing objects in your application persistent. Check out the article for more.