The major new visible feature of this update is support for toggling Smart Plugs. They're added as switch entities and can be toggled manually or as part of an automation and will be detected automatically after a restart.
Additionally there are now sensors for daily and monthly usage for each device channel (including for smart plugs). A final change is that sensors are grouped into devices automatically, one device per channel. For instance for a smart plug all three energy sensors and the toggle entity are all grouped together.