Google has launched new faces for the Nest Learning Thermostat (4th Gen) The highlight is a subtly animated botanical face that changes each month The faces are available now through your Nest thermostat's settings menu Google has launched a new set of faces for the Nest Learning Thermostat (4th Gen) , with botanical illustrations and subtle animation to make the slim thermostat look more like a piece of wall art. The new faces are applied to the thermostat's Farsight screen, which is displayed