How much more can ASUS shave off of the ZenBook, its flagship ultraportable? Apparently, quite a bit. The company's new ZenBook 3, announced today at Computex, clocks in at just two pounds and 11.9mm (0.46 inches) thick. In comparison, the previous ZenBook UX305 weighed 2.64 pounds and measured 12.9mm thick (0.51 inches). Sure, those might just seem like incremental improvements, but they're remarkable when you consider just how insanely thin and light the previous model was. Most impressively, the ZenBook 3 just barely edges out Apple's svelte MacBook, which weighs 2.03lbs and is 13.2mm (0.52 inches) thick, all while packing in a larger 12.5-inch display.