From Digital Foundry: “Will Red Dead Redemption 2 receive a PC version, and if so, what kind of visual upgrades could Rockstar deliver? The truth is that the existing console versions already possess high-end techniques sometimes reserved for high-end PC GPUs, so on the face of it, the options seem limited. And let’s remember that Rockstar hasn’t actually confirmed any PC version at all – though a data dump of the RDR2 mobile companion app seems highly indicative.”
Source: N4G PC How could Red Dead Redemption 2 improve on PC?