The original Nest Learning Thermostat set the bar for smart thermostats back in 2012, allowing you to control your home’s heating and cooling system from your phone. Twelve years later, the fourth-generation Nest Learning Thermostat ($279.

Google is releasing a new update for the Nest Learning Thermostat (4th gen), which adds a manual brightness control.

For now, the 4th-gen Google Nest Thermostat is only available in the US and Canada, for $279.99 and CA$379.99 respectively (about £215 / AU$415), because it's been optimized for heating systems in those countries. As yet there's no word on international availability.

Google is rolling out a fix for the automatic brightness bug that affected the visibility of the Nest Learning Thermostat (4th Gen) screen.

Nest Learning Thermostat users can expect an update 'in the coming weeks' that will improve screen visibility and legibility