It looks very good. I'm a fan of Cumberbatch and love these types of war movies. I'm looking forward to seeing it.
Alan Turing was a computer scientist and mathematician He is considered the father of artificial intelligence and he's the person who cracked the German Enigma code. (For a great movie about how we stole an Enigma machine check out U-571.)
The Imitation Game was Turing's name for what we now call a Turing Test, which is:
...a test to determine whether a computer can think... distinguishing “original” thought from sufficiently sophisticated “parroting.”
...if a computer acts, reacts, and interacts like a sentient being, then call it sentient. To avoid prejudicial rejection of evidence of machine intelligence, Turing suggested the “imitation game,” now known as the Turing test: a remote human interrogator, within a fixed time frame, must distinguish between a computer and a human subject based on their replies to various questions posed by the interrogator. By means of a series of such tests, a computer’s success at “thinking” can be measured by its probability of being misidentified as the human subject.