Dengeki Bunko editor Kazuma Miki officially confirmed that A Certain Magical Index Season 3 is happening and set to air in 2018!
Miki also said that the new season will not be the only A Certain (To Aru) being produced next year. He didn’t mention what else could be produced, but fans online are predicting A Certain Scientific Railgun Season 3 or an adaptation of the A Certain Scientific Accelerator spin-off.
A Certain Magical Index has been a hit since Kazuma Kamachi debuted the light novel in 2004. The series blends science-fiction and fantasy elements to create a world where science users (Espers) and magic users (Magician) fight for control of the world. Touma is born with a strange ability that can negate any supernatural powers at the cost of his luck. While not many people view his skill as important, it comes in use after he meets Index, a nun who is on the run after memorizing a set of forbidden grimoires.
J.C. Staff has produced every To Aru related anime so far, but it was not confirmed that they are producing the third season. More details will be revealed at a later time.