New OTA update system for HAA firmware. Main change is the increase of user settings storage, from 2 sectors to 8 sectors. New installations that use this will have big storage, very useful to configure IR codes and big HTTP requests.
There is no way to update from old LCM to get this. Only erasing and reflashing.
If you don't need big storage with your actual devices, you can keep using and updating HAA without reflash.
Read Wiki for more info.