When my Powerwalls were first installed in mid-July, the app displayed software version 1.3.3. This is also visible in some of the screen shots of the app elsewhere in the Tesla Energy forum here. This past weekend, it looks like there was an upgrade to 1.5.1. This isn't for the app; this is what shows for the software for the Powerwalls themselves. I did a cursory search on tesla.com for information about Powerwall software, but didn't find anything. Does anyone know where to find what functionality we gain with updates to the Powerwall software? This documentation exists and can be located for updates for Tesla vehicles, but I'm not sure where it is for the Powerwalls. Maybe it's less of a concern since we don't drive Powerwalls around? Pushing 1.5.1 out to the units must have improved or fixed something. I'm curious as to what it is.