What y'all don't understand in words IT'S NOT HAPPENING? No one would be stupid enough to cast Rihanna in as iconic role, with her little to no acting talent. Black Cat has been already casted.
http://www.imdb.com/character/ch0001...=nm_flmg_act_4
Felicity Jones is a brilliant actress, and she will nail it.
I would suggest to close the thread, because it's just pointless rumour invented by paparazzi.