Live now, the new Creators Update to Windows 10 coming in early 2017 will have integrated Beam features that allows easier streaming, interaction from viewers, and voice-controlled chat.
https://www.microsoft.com/en-us/octoberevent/microsoft-live-event
A demo showing the Beam features with FH3 started at 10:40am - you can see images and description in this live blog from The Verge:
Create your own tournaments with Arena on Xbox Live:
