Google has announced a new Nest thermostat, and you probably won’t fall over in shock to discover that, like seemingly every new tech device, its intelligent features are AI-powered: in this case, by Google’s own Gemini. The new thermostat model has been a long time coming. The simple and beautifully designed 3rd Gen thermostat was launched way back in 2015. But in the intervening time, similarly design-led, easy-to-use models from brands such as Ecobee in the US and Hive in the UK have gained ground. So, what does the 4th Gen model do that’ll set it apart from rivals? We’ve got all the inform…