Here's the question description and VD quote:
...a fan stepped up to the microphone and said, "It seems like every movie you're in, you become the face of that franchise, so I'm wondering, I guess the word is Vision? What's your Vision of the upcoming Marvel movies?"
Diesel laughed, "Why did I have to go ahead and say, 'Ask the question'? He asked the one question I'm not allowed to say anything about. Well, I will say there is some very big news coming at the end of this month."