Twitch streaming is now live on Xbox One
Plug in your Kinect and connect your console to the internet, then you will start streaming no matter what you’re playing for whoever wants to watch. Also you can review your game using the microphone inside Kinect or a headset microphone. With a bit of talent you will get the attention of your viewers right away and they will be amazed by your playing.
Twitch CEO Emmett Shear said that the Xbox One console application is the most comprehensive version available for consoles. He also said that in future you will be able take pictures for your Tiwtch profile, only by using your Kinect.
Source: Total Xbox