The Xbox E3 2016 Briefing is set to begin around 12:30PM (ET), which is just about 30 minutes away now. You can watch it either via Twitch or YouTube, both of which are embedded below. Enjoy!
Note: As of this posting, I do not see a live feed via the Xbox YT account thus the IGN feed is being used.
Note: As of this posting, I do not see a live feed via the Xbox YT account thus the IGN feed is being used.