According to van Beek, Aloy's model was brought over from Forbidden West, and lighting, skin tones and hair shaders have been reworked to match Zero Dawn's atmosphere. The dev also points out that the PS4 image shown below has motion blur turned off, resulting in the slight blurring present.

As of writing, the listing is still up, and it suggests that Horizon Zero Dawn Remastered - something that's previously been rumoured to be coming - will be arriving on PS5 and PC at some point before the end of time, or to put that last bit in less cheeky terms, there's no release date specified.