One of the biggest announcements for Xbox One came with the reveal of the Killer Instinct logo and a video sharing a few fighters who would be returning to the series. Jago, Sabrewulf, and Glacious, were shown in the combat teaser video after the break. In other news, it was also shown how you can record replays and share them on Xbox Live.
Personally I felt that this was an undershown part of the show. All in all, there was a LOT to see in the Xbox press conference. Killer Instinct was huge news though, even if it was one of the big rumors. It was definitely a giggle-squee moment for fans of the series such as myself.