Casting news:

[Carey] Mulligan is in negotiations to take the lead opposite Joaquin Phoenix in an untitled Spike Jonze project about world leaders uniting to discuss cataclysmic events. The director of Adaptation and Being John Malkovich hopes to shoot in the spring from a screenplay by his erstwhile collaborator Charlie Kaufman. (Source)

Before that, she'll star in the Coen brothers' Inside Llewyn Davis. Mulligan was Oscar-nominated for her role in An Education.