The user manual has instructions. Just go into the Air app and see if there's an update. Then say you want to install it. Then enjoy the new features and bugs.
P.S. Keep it plugged in otherwise if the battery cuts out, it could end up bricked maybe.
Thanks, Mojo! But I have a new Raspberry Pi board to install in addition to the software updates. I was hoping there was an instruction sheet, but nothing came with it so I thought I'd check here in case it's part of an FAQ or something!