I was kinda disappointed with how RS handled GTAV and am kinda worried about how they'll handle RDR2. I mean, GTAV was a fantastic game but since it's release (as in the PS3/360 release) RS has basically ignored the SP and only released MP content. I thought the MP was ok (fun, but the long as load times sucked- not sure if it got any better) but it never seemed very rewarding with the in game cash, only to further push people into spending real money to buy in game currency.
I hope that doesn't end up being the case here. I'm super stoked for RDR2 and I know the SP will be awesome... just hope that they continue to release SP content after its release.
I'm guessing this is gonna be a prequel, from Marston's days with his gang before the events of RDR.