That has got to be Olga. K.
Although she has been filming Bond all year, why would she take a minor role in another VG adaptation? How could she have the time? She has been jetting all over the globe and is involved in the vast majority of the movie.
Also, why would they snub her like this? No announcement, nothing on Wiki (well there is now but no source), nothing on IMDb, not set report, no pictures, nothing said by her or the makers.
Very strange, we might see something soon.
As for the movie, Hitman looked just as good at this stage. Could still go wrong. Then again with Fox calling the shots from day 1 it's unlikely.