Update: So I got this wrong. It wasn't that they'd be doing a demo of the game on their channel or anything it would seem that they were releasing a demo for gamers to play. Sorry about that misunderstanding.
Nintendo is giving Pokemon fans a rare threat. Today, October 18 at 7 AM Pacific time, Nintendo will be giving a demo of Pokemon Sun & Moon. According to the video the demo takes place outside of the games main story but hopes to reveal a lot about the game including new Pokemon, features and such.
Head back here later for said video which I'll link in this post.
Courtesy of Games News Network