What is the main difference of EFDC source codes between version 5&6?

hi, can anyone know the main difference of EFDC source code between version 5 and version 6, if add some new function in version 6 or anything else. I did not find any manual to describe the differences, very appreciate your help, Thanks very much.

Hi Zhou, This link below provide a list of progressive updates to EFDC_Explorer6/EFDC_DSI modeling system. At the bottom of that page there is a link to the progressive updates to the EFDC_Explorer5/EFDC_DS modeling system. Please let us know if you have any questions about this. EE7 is now released and you can see the updates for it here: Waht’s New