The Wormhole wrote:
They're actually finally going to cough up an explanation as to why they kept Cumberbatch's role a secret? That should be interesting.
It's probably the same explanation they had before the movie. They used Terminator 2 as a comparison saying that the movie was actually crafted in a way that you weren't supposed to know that Arnold was the good guy, but that the marketing gave it all away. I think that example is debatable, but the point they were going for is that they didn't want to spoil any kind of twist. Of course, in retrospect it wasn't really all that great of a twist and didn't really serve much of a point.