Vin Diesel may have revealed the title to 'the final chapter' of the 'Fast & Furious' series

Vin Diesel may have dropped a massive hint about the 10th installation of the Fast saga. In a post shared last Wednesday on Instagram, the 54-year-old action star coupled a photo of his son Vincent Sinclair with the letters "FX" buzzed into his hair on the left side of his head with a cryptic caption stating the number 10 "denotes the completion of a cycle."