Hidden in the code that comprises Gary Oldman's face are names of characters/elements from the story. Smiley (below left eye), Polyakov (lip), agent (chin), Merlin (above mouth, left), Tailor (tip nose), (on the forehead) witchcraft, circus, scalphunter, Tinker. And a couple others.
The red numbers are probably the release date but it's kinda hard to make them out. Looks like 16092011, which would be (since the British put the day before the month) September 16, 2011.
At any rate, a beautiful fun one sheet that captures the spirit of the plot nicely. Here's a detail: