The term may be misleading.. they are automated probes.
This is something really different and i'm amazed about the progress that's made each decade.
For us it's simple to lift a blanket and take out an envelope but imagine how much programming and technical dexterity it needs to accomplish such a simple task and it can be done nowadays.
This is a far cry from the Japanese "show" robots where they try to amaze people with human features but that's only superficial. The advancements are huge and will only get greater.
I don't think it's unfeasible to say that in a few decades we might have robots that equal those of I Robot (the ones doing delivery.. not the more advanced white ones).