Meet the Roomba Combo j7+, a $1,100 combo cleaning robot that ships on October 4.

The top of this cutout is plastic, and the bottom is the wet mop pad, which is connected to the robot by two side arms.

Two flaps on the side of the Roomba open up, revealing that the top mop cutout is actually connected to the robot by a pair of swing arms.

The j7+ has a redesigned dust bin that is now a dust and water combo tank.

The dust area is smaller to make way for a 210ml water tank.

That means way less dust capacity, but that doesn't really matter since the Roomba will just visit the base station to get cleaned out anytime the bin is full.

The state of the art in combo cleaning robots is probably the $1,400 Roborock S7 MaxV Ultra or $1,550 Ecovacs Deebot X1 Omni, both of which have a dust bin and water tank in the robot, along with a giant base station that empties the robot of dust, fills it with fresh water, and then washes the mop and stores the wastewater in a separate tank.

Something like a Roborock, by contrast, just has a mop permanently affixed to the bottom of the robot, and the mop setup is on a variable-height suspension, so it can be lifted up slightly to avoid touching carpet.

The Roomba Combo j7+ is the only 2-in-1 with a mop that lifts itself to the top of the robot, completely away from carpet and rugs.