4K graphics

Sony reveals PS4 Pro with 4K graphics

The PS4 Pro will be able to render games with ultra-high definition 4K graphics, more detailed than 1080p HD.

A cosmetically redesigned, slimmer PlayStation 4 was also announced and will be sold at a cheaper price.

One analyst said releasing an upgraded console so soon after the PS4's debut in 2013 took the company into "unchartered territory".