During the Xbox One E3 press conference, the Xbox One stream feature was showcased while playing Killer Instinct. The footage shows a sidebar with several broadcast buttons and the audience chat. The Smartglass seems like it would be pretty useful for streaming here, but there was no mention of Smartglass support. Along with the streaming, Xbox One was also shown using a replay feature where a fight in Killer Instinct was immediately recorded and uploaded (somewhere). We’ll keep you updated when more information rolls in.