Originally Posted by ska
I think R* are hinting at that when you're mining for oil with one of your friends that call you up on your cellphone you will find John Marston's body.
It's a possibility, maybe this is the bold new step Rockstar is taking? Combining multiple game worlds?
I bet money on the fact that the Mysterious guy with black hair is actually a descendant of the second protagonist you play in RDR.