https://thenextweb.com/tech/2018/10/26/twitch-group-streaming-karaoke/

Twitch today revealed a plethora of new features for streamers and viewers, as part of the first day of its TwitchCon celebrations. CEO Emmett Shear led the Day One keynote, revealing the new features to the attendees. Some were niche — such as the better moderation tools, and the ability to designate some viewers as VIPs — but others were big and exciting.

One of the biggest updates was Squad Stream, which allows users to stream together from a single page. Streamers in the squad will all have their streams visible in small panels, with one “main” streamer taking up the regular video space. Viewers can cycle through the squad members at will, participating in each of their chats.