Leaked pics appear to reveal the long-awaited fourth-generation Nest along with new temperature sensors. Leaked pics appear to reveal the long-awaited fourth-generation Nest along with new temperature ...

A fourth generation Nest Learning Thermostat and second generation Nest Temperature Sensor have leaked. The new Thermostat appears to feature a larger screen than its almost decade-old predecessor.

Nest's two smart thermostats look similar, but they're very different under the hood—and only one of them is a "learning" thermostat. Read CR's expert review for the real-world differences. The Google ...