We have tested and updated Design Extender and Data Bridge with CS6, so it should be ready to go when CS6 is released.
The difference in price between Data Bridge and Design Extender is that Design Extender was a pure consolidation without any real new features. Data Bridge has a completely enhanced DataAssist wizard that integrates File Upload, File Manager, Button Styler, Form Builder, and HTML Editor into the data assist wizard as well as adding saving presets and the ability to create the database table for you. The full version update of DataAssist included in this release is our justification for the $99 price increase, and once you try it I hope you'll agree it is well worth it for all the work we put in.