What exactly are the main differences here between this third gen and the previous version?
* "It’s slimmer and sleeker with a bigger, sharper display"
* "Now the Nest Thermostat does something new. It’s called Farsight and it lights up to show you the temperature you’ve set or the time. You can even choose a digital or analog clock face."
https://nest.com/support/article/How-can-I-tell-which-Nest-L...
They appear to have both reduced the brazel size and increased the display's size. Additionally it is a little thinner than the 2nd gen and massively thinner than the 1st gen.
Definitely an improvement at the same price point.
Sure, but not a big enough difference (for most folks) to consider upgrading from a 2nd-gen.
Agreed, but thermostats really shouldn't be something we have to replace every 1-2 years anyways.
Hell, I've a v1 (.12) Nest and see nothing compelling to make me upgrade - and that makes me happy.
Neither are phones and laptops, really. The difference is that those advance at a rate that makes an upgrade compelling. I have a Mid-2009 Macbook Pro. It's fine. I put an SSD in it recently and it's even better than fine. The only time I get the impulse to replace it is when I'm near a newer Macbook. In a vacuum, it's all I'd ever need. Sadly (for my wallet), it doesn't exist in a vacuum.