The trailer never characterizes the Bombe as a computer, CumberTuring calls it a machine for decryption.
It could be worse: the last time Hollywood took a crack at this story ("Enigma"), they invented a mathematician, gave him Turing's accomplishments, but made him not gay, and the only Pole on screen was a baddie.
I don't have particularly high hopes for this one, though. I don't find CumberTuring's performance in the trailer engaging- he's playing Generic Cumberbatch Character #9. Keira Knightley just looks like Keira Knightley, not a woman in 1943.