The 3rd generation August Smart Lock, now labeled as Pro, has all of the features of the 2nd generation lock plus it adds DoorSense Technology and Z-Wave Plus. DoorSense is a clever sensor used to determine if your door is closed. Z-Wave Plus allows you to connect this lock to a multitude of home automation hubs to directly integrate its operation with other smart devices in your home.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips