Nest Learning Thermostat gets refreshed with a slimmer design

It's been just about a year since former Apple exec Tony Fadell unveiled his newest project, the Nest Learning Thermostat. At the time, it was notable for being the sexiest thermostat in the history of household automation, with WiFi connectivity, mobile apps and an iPod-like click wheel for adjusting the temperature. Today, Nest Labs announced the follow-up to that product, and while it boasts the same tricks as the original, it's noticeably slimmer and will work with a wider array of heating and cooling systems. Oh, and the company is finally releasing an Android tablet app, while the current iOS and Android phone applications are getting updated with new features as well. It's up for pre-order now for $249, while the old model has gotten a price cut to $229. That's the short version, but if you head past the break we'll give you a more detailed walk-through of what's changed.