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Oh hey, new Roomba! The Roomba Discovery is being pre-sold "exclusively [to] current Roomba owners" at the moment, but includes some much-needed improvements, like a self-charging Home Base which the Roomba will head to, automatically, when done cleaning (finally!), an "intense cleaning" feature (presumably detecting areas that need multiple passes, and a dust bin that's 3 times larger. Sounds like an all-around improvement, so good on them. The Discovery is currently being sold on the iRobot Store site for $250.
Read - Product Page [NewRoomba]

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