The Nest 3rd generation Learning Thermostat has a slimmer profile and a high-resolution screen that's 40 percent larger, and an updated user interface to make it easier to read temperatures, alerts and messages. New software features for the 3rd generation Nest Thermostat include Farsight, which automatically displays the target temperature or time when it senses movement in the room, and Furnace Heads-Up, which uses diagnostics to give advance notice about possible problems with a customer's heating system.

New features for the 3rd generation Nest Learning Thermostat

• Sleek new design – The Nest Thermostat has a 40 percent larger, brighter, high-resolution screen and new graphics so you can see it easier from far away. The crisp display has 229 pixels per inch (PPI), 25 percent more than the 2nd generation Nest Thermostat. The 3rd generation Nest Thermostat also has a slightly thinner profile to be more flush against the wall.

• Farsight – Previously, you had to be pretty close - about 3 feet (1 meter) away - to get the Nest Thermostat to wake up and turn on the display. Farsight takes advantage of the new high-resolution screen so that you can see useful information on the Nest Thermostat from across the room. You can set the thermostat to display target temperature, an analog clock or digital clock, or turn Farsight off.

• Furnace Heads-Up – Most heating and forced air furnaces have an automatic shutoff to avoid overheating. The Nest Thermostat will look for shutoff patterns that indicate there's a persistent problem and if so, you'll get a Heads-Up message in the Nest app and on the thermostat screen twice per year, and you'll also get a notice in your monthly Home Report. (Furnace Heads-Up will be available for 1st and 2nd generation customers later this year.)

And, like the 1st and 2nd generation, the 3rd generation Nest Thermostat will also include the following integrations with Nest Protect and Nest Cam.

• When Nest Protect sounds a Heads-Up or Emergency Alarm for smoke or carbon monoxide (CO), in addition to a Nest app notification you'll see a message on the Nest Thermostat display to help you know what's going on. The Nest Thermostat can automatically shut off fossil fuel- based heating systems, which is the leading cause of CO leaks in the home, in case that is the source.

• Nest Protect enhances the Nest Thermostat's Auto-Away feature by improving Nest's knowledge of when you're home or away.
• You can set your Nest Cam to begin automatically recording when you switch your Nest Thermostat into Home or Away mode.