This release is not the short release we had intended.  We've enhanced and matured the connector framework, added some great connectors (file system and JPA/relational), improved other connectors (in-memory, federation), and improved the whole Graph API.  But we've spent the most time in dramatically enhancing our JCR implementation, and we have added (among other things) update capability, node type management, constraints, import/export, and workspace clone.  In fact, we've been using the TCK unit tests (from the Jackrabbit project), and are actually not that far from JCR Level 1 and Level 2 compliance.  (You can check our nightly progress at )  

We won't quite get to Level 1 and 2 compliance by the 0.4 release, but we think the next short release (or two very short releases) will provide the last features (search, query, events) required to make DNA a full-fledged JCR implementation and our "1.0" release.

Best regards,

Randall