This release is the third alpha release for DX3. Even though great care has been taken, the project manager highly recommends you work with test data and you regularly back up the DataExplorer.DBF found in your HOME(7) folder. New features are documented on the project home page.
Once installed, make sure to go to the Data Explorer Options page, click the Restore to Default button. This brings up a dialog asking if you want to maintain connections and customizations that were done by you or a third-party vendor. We highly recommend keeping your connections and customizations, so click YES. This action will install the new VFPX (and Sedna if not previously installed) features found on the right-click menu, and the new VFP Directory connection type.