Managed quite a bit of play time this weekend, completing all the misson's in Mexico. Both Escuella & Bill Williamson are dead & I helped Reyes start off the Mexcian revolution. Then you venture back up north to the town of Blackwater & help the Law enforcement officers take down the Duke.
There is a lovely sequence after you have killed the Duke & you are set free to return home a song plays on your journey called "Compass"
I was expecting a credits sequence to follow but luckily no I have more missions to do around my ranch :)