revealed the first set of cast members, including “Glee” alum Kevin McHale and “Pose” star Dyllon Burnside, on Instagram.Per FX on Hulu’s official description for the show, “American Horror Stories” is a weekly anthology series that will feature a different horror story each episode. Further details are being kept under wraps ahead of the show’s launch next Thursday, July 15.The “AHS” spinoff is executive produced by Murphy, Brad Falchuk, Alexis Martin Woodall, John J.