I appreciate some of the things he did at Apple, but the guy kinda has a reputation for conflict. Selling to Google was probably the wrong choice. I loved my Nest and the frequent updates it would get. Those definitely slowed after Google bought them, and they started losing their focus on glitchy, over-priced smoke alarms and then the whole Dropcam fiasco going on right now. They still haven't ever updated the app to work with widgets in iOS 8, and they never developed an Apple Watch controller or integrated with HomeKit (which may or may not be possible). They never even updated it so that I can have it adjust the temperature slightly based on the humidity level in my house.
We're closing on our house soon, and with it stays the Nest. I've got the ecobee3 in my cart on Amazon, and unless something better comes out after WWDC, it will be one of the first things shipped to my new house along with the Schlage Sense Smart Deadbolt. It is upon these things and my Apple TV 4 which I will begin to construct my HomeKit empire! I might also pick up some Hue White Ambiance bulbs, and maybe some kind of HomeKit weather thing because I'm a weather geek.