Spanish YouTuber ElAnalistaDeBits used software trickery to emulate what a remastered version of Bloodborne would look like. The side-by-side comparison video covers many iconic areas of Bloodborne and showcases several visual improvements, such as better lighting, reflections, etc.
https://www.notebookcheck.net/YouTuber-envisions-what-Bloodborne-could-look-like-on-modern-day-hardware.621691.0.html