I saw a demo of the new Cerec software version 4.o at the CDA. It is scheduled for release in September. This is not a tweak but a major overhaul that adds significant functionality and reduces the time needed to create great CAD CAM restorations. The biggest change is the improvement of the Biogeneric system that creates a restoration based on the adjacent or contralateral teeth. No more tooth libraries the patient is his own library.