We've just released the first alpha version of the new eZ Components release, for which the full version is due to be released somewhere next month. There are two new components, but also many improvements to existing components. The new components are:
Tree, which handles the creating, manipulating and querying of tree structures. The component supports different storage algorithms for optimal performance. There are two tieins for this component, TreeDatabaseTiein, providing functionality to store tree-data in a database, and TreePersistentObjectTiein, providing data storage in the form of persistent objects.
Webdav, which allows you to set up and run your own WebDAV (RFC 2518) server, to enable online content editing for the users of your system through the WebDAV HTTP extension.
You can find the full announcement here .