http://www.engadget.com/2015/05/29/atap-project-soli/
Ok, that is probably one of the coolest attempts at gesture recognition in a while. I thought Leap motion was going to be good, but it was rather disappointing. the video for Soli seems to show some rather advanced gestures, at high resolution. I only hope they'll also enable gestures on a virtual wall or table as well as the current finger+hand motions. Scrolling around with just your thumb would likely make your thumb very tired if you had to do it a lot.