Kairi Irving
Here Comes A New Challenger
Which is why I think that they'll still do single player DLC, because RDRO is an absolute failure that continues to lose interest. GTAV online started off slow but the player count continued to grow, and that's why they still make content for it to this day. RDRO is basically DOA at this point so I expect them to make a few more attempts at making it playable before we get some surprise DLC trailer.
I don't think they will. Dan's gone, he knows there's no plan for expanding upon single player through DLC.