There are not additional features but navigation, UI and patching are improved and definitely more user friendly. Not to mention that you can control all your miniDSP devices with one single app (when 2x4 HD and DDRC-24 are included). BTW, miniDSP Device Console is not on Beta anymore for the FLEX since 3 days ago when miniDSP released the first official Device Console version for the FLEX. miniDSP 2x4 HD is now on the cue for the Beta version.