Apple wouldn’t be first, at current count they are about ninth. And as I’ve said before I don’t really expect to see a lot of the devices for homekit available to actually buy until summer a year from now.
But homekit is already here, at least for developers to use. The smart watch is likely intended to fit in. And it seems very clear that AppleTV will have a very important role in homekit deployment, because it’s going to be the only way to control HomeKit devices when you are away from home.
(For those not familiar with Apple TV, this is not a TV set. It’s a small streaming device like Roku or chromecast. Current cost is under $100, and a new version is expected this summer, probably to be announced at the June apple developers conference.)
Apple will move slowly, and there are a lot of things they want to get right, but I think the trajectory is established.