They are a new generation of smart display panels that display 4 basic colors and can generate a bar - code to be read for inventory. (goodereader.com)
This update also hints at new capabilities for smart display, like shopping and ordering. (9to5google.com)
Some of the coolest things in the booth, to me at least, were the development kits showing off the hardware that powers smart displays and smart speakers. (9to5google.com)