The PlayStation 4 port of Red Dead Redemption does actually include a major graphical update.
There's No Redemption For Rockstar's Red Dead
Microsoft expected Red Dead Redemption 2 PS5 and Xbox Series X upgrade to release last year
Red Dead Redemption comes to PS4 and Switch
Red Dead Redemption 3 confirmed by Rockstar parent company, release window teased, red dead redemption 3
Rockstar Games Officially Reveals Red Dead Redemption Remaster
Red Dead Redemption Remastered rumored to be in development - Dexerto
Rockstar Pisses Off EVERYONE With Red Dead Redemption News
Red Dead Redemption Remastered New Logo - May Announced Soon
How could Red Dead Redemption 2 improve on PC?
Red Dead Redemption is coming to Switch and PS4 on August 17. - Red Dead Redemption - TapTap
Red Dead Redemption Remaster Rumor Unpacked