We can thank companies like Nest for raising awareness about home automation and related gear and thanks to that raised awareness more companies are looking to get into the home automation market. One of the companies that are looking to get into the home automation market is Apple according to a rumor.
That rumor claims that Apple will be putting out a line of home automation products that integrate deeply with existing Apple devices. Rumor sources haven't said what sort of products Apple is developing, but the project is said to be past the exploratory phase.
Rumor sources have claimed that Apple isn't building gear to compete directly against Nest; presumably, that means no smart thermostats or smoke detectors. Apple is targeting devices with wider usage than the gear Nest is producing. Exactly when these Apple home automation products will hit the market is unknown.