Not too long ago Google acquired Nest. The company, if you’re not familiar with them, developed and manufactures a unique smart home thermostat. We haven’t heard much about the product and what Google would be doing with them since the purchase but today some new information is pointing to the product being sold alongside Nexus devices and Chromebooks in the Google Play Store.
As you can see, on this Google Play support page, the device is listed as available in the US, Canada, and the UK. The device has not been seen in the Play Store yet (if you see it let us know).
Since this was posted the Nest has been removed from the Play support page.
Source: Google Play Support