Sony is reportedly developing a ‘PlayStation 4.5’ for 4K gaming

At this point, we don’t really know anything about Sony’s plans. It could end up being some sort of add-on device for existing PlayStation 4s, or it might be an entirely new console that will leave existing PS4 owners behind. Given the amount of gamer goodwill Sony has built up with the console, I could see it offering some sort of upgrade path to ease the transition. The company wouldn’t comment on the rumors to Kotaku, but that’s not a big surprise. – Devindra Hardawar,Engadget