They can go back to their base station and self-empty/refill a water tank for mopping now, which is an amazing upgrade over just a vacuum cleaner. Or at least

They can go back to their base station and self-empty/refill a water tank for mopping now, which is an amazing upgrade over just a vacuum cleaner. Or at least in theory it is, my DreamE somehow got progressively dumber with subsequent updates and now not only gets stuck and confused all the time, but usually can't even find its way back to the station. It seems the software on these things still has a ways to go.