Although in this brief interview George Clooney first discusses publicly that his friends - Brad Pitt and Angelina Jolie are getting a divorce - by evaluating his body language we can discern that at the very least he had foreknowledge of something strongly amiss in their marriage - and was he not surprised.
During 0:25 - just after the CNN reporter says, "... Angelina and your friend Brad ..." and Clooney answers, "Oh, what happen?" - Clooney's forehead and eyebrows contract and elevate - but simultaneously his upper eyelids partially close. This is an unnatural facial movement of emotional dissonance and not in any way indicative of surprise or sincerity - moreover in this context it's a signal of foreknowledge and insincerity.
Less than a second later Clooney pulls in the right side of his jacket.
This is essentially simultaneous with the repositioning of his notebooks higher and more centrally over his chest. This configurational change is an emotionally protective barrier formed just after he hears the word "divorce".
Then at 0:27 George looks up to his right - the quadrant to which most right-handed people (as is Clooney) momentarily gaze when they are visually recalling a specific event.
Then at 0:28 Clooney again closes his upper eyelids - this time completely - while contracting and elevating his eyebrows and the full width of his forehead.
Clooney continues (at 0:32), "... That's, that's a sad story and unfortunate for a family [smiling]. Ah, it's an unfortunate story, ah, ta - about a family. I feel very sorry to hear that..."
Smiling at this specific time is extremely out of context. This phenomenon is a variant of what, in body language parlance, is known as "Duping Delight". Clooney thinks he has fooled us into believing that this is the first he's heard the news (Moreover, a paralanguage signal of his insincerity here is that he feels the need to tell us twice).
During 0:43 Clooney displays a classic expression combination of regret and disgust.
Summary: Although this is unpleasant "news" for George Clooney to hear, he had prior knowledge of trouble in Brad Pitt's and Angelina Jolie's marriage. This "news" did not surprise him. It's important to point out here that although Clooney is an accomplished actor and he can fool us when he's "in character", when George is just being George, he's no better than average at deception.
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