Matt Reeves announced on Twitter that Peter Sarsgaard is joining the cast in an undisclosed role. Although, there are two faces in the image he chose to accompanied his tweet. I don't know if we're meant to read into that or not, but a while back it was rumored that Jeremy Strong passed on playing Harvey Dent. It seems at least possible that Sarsgaard could be taking that role. Incidentally, he is married to Maggie Gyllenhaal, who of course played Rachel in The Dark Knight and was a love interest for Harvey Dent in that film.