Lady Gaga and Angela Bassett are among the returning cast, but the theme for the new chapter hasn't been revealed, reported Ace Showbiz.
FX's head John Landgraf teased that the season would take place in "the present" but with "echoes of the past."
Murphy hinted at using the elements of children.
"If you look at horror tropes, the innocence of children, that sort of wide-eyed entryway into some world, is always very dramatic and satisfying.