Dreame, a Chinese smart home company that seems to constantly release new robot vacuums, has announced four more of the devices, dubbed the L60 series, at its Dreame NEXT event in San Francisco. The robot vacuums, which follow the company’s L50 series and the X60 Max Ultra Complete that I recently reviewed , range in price from $1,000 to $1,400, with a few key differences across the line. First, here’s what’s the same across the line: Every one of the new L60 robot vacuums has a seemingly identical self-empty dock that can also clean and dry the robots’ mop pads. All also have robotic parts—their side brushes and right-hand mop pads swing out to get closer to furniture and wall edges—although how they work depends on which model you’re looking at. They also each have ways to climb short transitions; how high is, again, model-dependent. See L60 Pro Ultra at Amazon See L60 Ultra at Amazon See L60 Ultra FE at Amazon © Wes Davis / Gizmodo The Dreame X60 Ultra’s mop pad has reach.…