Seydoux will star alongside Tom Cruise, Michael Nyqvist, Jeremy Renner, Paula Patton, Vladimir Mashkov, Ving Rhames and Simon Pegg.
M:I-4 will be directed by Brad Bird. Cruise, JJ Abrams and Paula Wagner will act as producer.
The film is currently in production in Prague, and a few pictures have found their way online already.
THR reported this one.