Dawn Of The Planet Of The Apes (2014) - New Lead Cast

The Hollywood Reporter tells us about Jason Clarke joining the cast:

Jason Clarke, a breakout actor thanks to his performance as a CIA agent in Zero Dark Thirty, has signed on to star in 20th Century Fox’s Dawn of the Planet of the Apes.

 And then:

It is unclear who Clarke will play.

The film is scheduled to hit theaters on 23 May 2014.