Despite a difference in pricing of $200, the D4 and D6 will share many functions and abilities. Both robots communicate with home Wi-Fi networks, and let you command them through the Neato mobile app (iOS, Android). You'll get cleaning reports, along with maps of the ground they've covered in your house.
Another ability that's made it into these two machines is something called, "No-Go Lines". Previously only offered by the company's flagship model, the, it lets you declare parts of your home forbidden. That might include rugs, power cords, kids' rooms, etc.
The D6, however, supports multiple floor plans while the D4 does not. That's critical for storing different maps (at the same time) for each level of a multilevel house. You get a "high-performance" air filter plus a side brush with the D6. The two add-ons supposedly make the robot better equipped to deal with pet hair and dander.
Friday the D7 did receive an ability, "Zone Cleaning", that Neato's other vacuums can't match. With it, users make smaller "zones" within the floor plan. These areas are meant to cover high-traffic, frequently soiled spots that require cleaning often.
Both models, Neato says, are available for purchase immediately.
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