Vin Diesel has released some insights as to what fans can expect in the upcoming Riddick on his official Facebook page. "My partner since the beginning (director David Twohy) has a new challenge in store. He wants me to have three different body looks for the next chapter. There is the DiNorscio type, the Dom type and the lean Furyan type, but all in the same movie. When it comes to art, we all like a challenge!" As for what this cryptic message means, I guess we'll have to wait and see but one thing is for certain - we hope this third Riddick film is more like the excellent Pitch Black than the hugely disappointing The Chronicles of Riddick.