Taken right from Andrew House:
"If you are a person who’s just purchased a 4K television, maybe there’s not that much content around right now, so there’s something interesting about games being able to fill that gap and offer that experience. Those are the fundamentals of Neo."
http://www.vgchartz.com/article/264717/house-sony-was-surprised-about-xbox-scorpio-announcement-over-a-year-ahead-of-time/
Some members on here are under the notion that the PS4 Neo is just to help games get to a full 1080P resolution at 60 frames per second but it seems abundantly clear that a 4k(2160P) resolution is the primary focus and goal of the Neo. Expect a very expensive console(same applies to the Scorpio....).