Roman has a nice demo and details about the upcoming Visual Development pack for NetBeans. He calls it Matisse for the web. I beg to disagree, Java Studio Creator has data-binding already (allthough I hear not all will be initially in the pack later this month).
Other than having only one IDE (which is certainly good), the value I see in this pack is to have Java EE 5 support which means I can start mixing the WYSIWYG JSF 1.2 features with the JPA (Java Persistence API) and EJB 3 technologies (with web-tier resource injection in managed beans for instance) and deploy this all to the latest Glassfish (startup and WAR re-deployment speeds have become really nice).
Playing around with this should be fun and it will most certainly remind me of the Project Rave Technology Preview