Bond 24 is in the process of gearing up for production. The last we heard was that Skyfall co-writers, Neal Purvis and Robert Wade, were brought on to polish up the script with some humor. The latest news comes from Schmoes Know, who say that Lea Seydoux (Mission: Impossible - Ghost Protocol, Blue is the Warmest Color) is the top choice to take on the female lead opposite Daniel Craig in the film.
There's no official word on who she would play in the film if this rumor turns out to be true, but the site does speculate that the character is Miranda Frost. A source close to the production revealed earlier this year that producers were looking for the following: "Lead Female (30-40) Attractive, sophisticated, cool and calm secret agent." According to the site their source said that this was the breakdown for the Frost character, who first appeared in the movie Die Another Day.
If this is true, then I'm sure it will be a different version of the character. Here's a description of her from Bond Wiki:
Miranda Frost is a fictional character in the James Bond film Die Another Day. Frost is a double agent working for MI6; however, her true allegiance lies with Gustav Graves, the main villain of the film. She is played by Rosamund Pike. She is one of the Bond Girls in the film.
This is all just speculation at this point as there's no confirmation that this character will be in the film. But if Seydoux does end up being cast in the movie, she seems like she would make a perfectly manipulative Bond girl. She's definitely got the look.