He just announced it on facebook and I can barely handle this information on account of my love for all of the things mentioned in this paragraph:

Okay, I'm back again with that big deal that I couldn't talk about but couldn't shut up about either. Well, now I can talk about it, because today it came true. Guillermo del Toro, director of PAN'S LABYRINTH, HELLBOY, and the upcoming PACIFIC RIM, has cast me in one of five leading roles in his new film CRIMSON PEAK, a Gothic ghost story also starring Benedict Cumberbatch, Jessica Chastain, and Charlie Hunnam. We start shooting in Toronto in January.