According to The Hollywood Reporter, Sigourney Weaver will join Hugh Jackman in Neill Blomkamp's currently shooting sci-fi movie, in which Sharlto Copley will play the title role of
Chappie. The
District 9 actor will play (via motion capture) a law enforcement robot who is stolen and reprogrammed by a couple of gangsters played by Ninja and Yolandi Visser of Die Antwoord.
The Newsroom's Dev Patel will also star. THR don't reval what role Weaver will play, but they do provide an official logline for the movie:
"After being kidnapped by two criminals during birth, Chappie becomes the adopted son in a strange and dysfunctional family. Chappie is preternaturally gifted, one of a kind, a prodigy. He also happens to be a robot." Chappie is a partnership between Sony Pictures and Media Rights Capital, and is based on Blomkamp's short film
Tetra Vaal, which you can see below.