As you can see from the selection of Tweets below, one fan luckily has the common sense to ask Vin Diesel - who was in Hall H for the Riddick panel - about his recent meetings with Marvel and the rumour that he will be playing 'The Vision' in one of their upcoming movies. While he refused to give anything specific away (not exactly a surprise), the star of the Fast & Furious franchise did seemingly confirm that he will be working with the studio, before revealing that we will learn more at the end of the month. Does he have a role in Guardians of the Galaxy? The Avengers 2? We'll just have to wait and see, but it appears as if the actor is indeed the latest addition to the MCU.