To which Tez seemed to agree, replying: 'That's what I'm thinking too, but Rockstar had a limited time offer where downloading the launcher grant you free GTA SA copy.
So maybe this is a GTA V+RDR2 bundle or a GTA V+GTA IV Complete Edition,' suggested the GTA Forum user. 'A few years ago R* made a bundle in which you got GTA V+SA.
In response, another forum member suggested that it could be some sort of GTA 5 and Red Dead Redemption 2 bundle, similar to something the company had done previously with GTA San Andreas. Which to us seems less likely given there's already plenty of them to choose from. So it's not conventional DLC, but rather some sort of new bundle for the game or possibly a new Shark Card.
I wonder if this is some sort of a new pack or a new shark card?' 'New DLC pack, it's not the sort of 'DLC' you think as Criminal Starter Pack & Shark cards are classified as 'DLC'. Here's TezFun2 with the explanation, as posted to the GTA Forums: