The Surface's coolest feature isn't its 10.6-inch display or ultra-thin design, but rather the clever Touch Cover that's both a screen protector and a multi-touch keyboard. Just 3 millimeters thick--the Surface with Touch Cover attached measures a still-svelte 12 millimeters--the cover has a magnetic connector that secures it to the tablet.
The keyboard doubles as a track pad with left and right buttons, and has special keys for Windows 8's Metro interface. "On average, typing is twice as efficient as typing on glass," said Sinofsky. True? We'll have to wait a bit longer to find out. Microsoft didn't let reporters bang on the keyboard at the June 18th event.