How to make Philips Hue widgets on iPhone using Hue Widgets - YouTube
Philips demos Notification Center widget on iOS 8 for controlling Hue lights
Hue Widgets: Small iOS app enables missing function - Hueblog.com
I'm sorry, but how on earth is a Siri shortcut better than the widget?! Top one being the shortcut and lower one being the widget that they have now discarded in 4.0.