While there’s no official news from Rockstar itself, a video was uploaded to YouTube showing the alleged in-game graphics settings menu. However, nothing else worth noting was shown and the clip itself was quite brief, showing that it is most likely not a legitimate. However, that is not to say that there is no reason to be hopeful about RDR2 coming to PC. Shortly after the game’s console launch, its official companion app was apparently datamined; illustrating that it may eventually release on PC. The original video was deleted by its user, but as of now, it can be found in the following link:
Settings shown include V-sync options, texture quality, reflection quality, and a few more. Until Rockstar responds, we wait patiently and hopefully for the PC port of this phenomenal game.