From Variety:
It looks like Fox’s reboot of “The Fantastic Four” is getting closer to finalizing its cast. Sources tell Variety that Simon Kinberg has finished rewriting the script and that the studio plans to begin testing thesps for the roles of Reed Richards (aka Mister Fantastic) and Sue Storm (aka the Invisible Woman) by the end of the month.
Rumors have circulated that Miles Teller is in talks to play Richards after he said in an interview that a decision would be made shortly. Other actors expected to test for the part include “Game of Thrones’” Kit Harington and Richard Madden.
Kate Mara and Saoirse Ronan are expected to test for Sue Storm. Michael B. Jordan is attached to play Johnny Storm, but he is expected to test with the actors to see which group has the best chemistry.