Ellen Page, Marion Cotillard and Cillian Murphy are in negotiations to joing Leonardo DiCaprio in Christopher Nolan's upcoming sci-fi action flick "Inception."

Plot details are strictly kept under wraps, but according to the Hollywood Reporter, the project is described as a film set within "the architecture of the mind."

The trade also revealed DiCaprio would play CEO-type character, with Cotillard starring as his wife. Page could star as a college grad. It's not exactly the most compelling information, but I guess it's better than nothing.

Nolan plans to shoot the thing this summer and release "Inception" July 16, 2010. Besides "The Dark Knight," Nolan also directed "The Prestige," "Batman Begins" and "Memento."

Now, Page can next be seen in "Whip It!," while Cotillard will soon return to the big screen in "Public Enemies." Cillian Murphy's upcoming projects include "Peacock" and "Hippie Hippie Shake."