On the new character posters for ‘Inception‘ each character received a title. Marion Cotillard is ‘The Shade’. Look at the other posters on Empire Online.
There’s apparently also a different version of Marion’s ‘The Shade’ poster around – according to this picture on Twitter (thanks Nadine for the heads up!).
The Japanese ‘Inception‘ trailer – as aired while Ken Watanabe gave an interview on Japanese TV – features an additional glimpse of Marion.