Paramount has set a February 23, 2018 release date for the film, which is an adaptation of the acclaimed sci-fi novel from Jeff VanderMeer, according to The Hollywood Reporter.
The film is directed by Alex Garland and stars Portman as a biologist, who is sent on a special mission.
In the novels, the government sends expeditions to Area X, an uninhabited land in which unexplainable things happen. Those who due enter Area X either don't live long or return not quite as themselves.
The novel 'Annihilation' is the first book in VanderMeer's Southern Reach trilogy, which debuted in 2014.