As seen in the image, adding a Hue widget to the Notification Center would potentially give users direct access to an off switch and a selection of light scenes.
This is a concept prototype to show the use of extensions to provide access to hue from the notification centre! pic.twitter.com/xC92LAgVfq— Philips Hue Dev (@philipshuedev) June 5, 2014
As described during Apple's annual Worldwide Developers Conference, iOS 8's Notification Center allows third-party apps to create widget extensions to display information directly in the "Today" view. Right now, Apple limits Today view to integration with its own stock apps like Calendar, Stocks, and Weather, but with iOS 8, users will be given far more customization options thanks to third-party integration.