From aintitcool.com:

The premise of my question was to find out how much trouble Urban (who plays Dr. McCoy in the STAR TREK movies) got in recently by his STAR TREK 2 director J.J. Abrams & Co. for possibly spilling the beans on who Benedict Cumberbatch is playing in the new film. This is how he responded…
 
Capone: I have to ask, how much hot water did you get in for that bit of news you let slip about STAR TREK 2 last week?

Karl Urban: I was afraid you were going to ask that. J.J. Abrams sent me something for Comic-Con this week and told me that anytime I was asked a question about STAR TREK, I had to do this…[Karl removes a long strip of masking tape with something written on it off the leg of his jeans, where it has been stuck since he walked in the room, then proceeds to do this, posing for my photograph quite willingly]

Let the speculation whether Urban has actually let the cat out of the bag regarding Benedict’s character continue…