Chamberlain, iDevices, and Schlage were three of the first manufacturers to jump in with HomeKit, Apple's iOS-based smart home platform. The three had hardware on display for the press at an event in New York City -- Chamberlain was up first, with the HomeKit-friendly MyQ Garage controller.
From there, just plug something else into it. You'll be able to switch it on and off from the smartphone app, or automate when you want it to turn on and off. You can also just tell Siri to "flip the Switch."