He never gets to see it.
Five months and two days after Joanna Beth (not Jo anymore) finds her mother's body on the cold cellar floor something happens.
He stops what he's doing because for the first time in 250 years he feels pain. He feels like there's flames engulfing his legs and the heat is steadily working it's way up to his chest, burning away scars and hurts and memories. Purifying and damning at once.
He knows someone's finally found Samuel Colt's grave in Tennessee and is burning his old bones to ash. He probably has Sam to thank for that but Dean is still out there too. And he thinks it's ironic that of all the fates he's predicted over the years, his was the only one he never saw coming.
But he never gets the chance to regret because suddenly Dodge comes bounding across the field under a yellow sun and all he wants to do is play fetch.
