This just in: John Langan has informed me that since he was not given a reading slot at Readercon, he plans to hold a guerilla reading, featuring both him and his fellow F&SF contributor Laird Barron (in which, I imagine, they will compete to see who can instill more nightmarish imagery in the as-yet-unformed dreams of the audience). Room and time are unknown, so be sure to keep your eyes and ears open for details!