Straight from the Tokyo Game Show, here's some footage of Final Fantasy XV running on a PS4 Pro. Granted it's going through a camera looking at a television and then being uploaded to Youtube, but it still looks pretty good! It's also worth noting that it looks exactly the same as when I played it at E3...
Truthfully I think FFXV is just going to be a beautiful game in general regardless of platform, but that's just my opinion.