Their Full Album ‘Walpurgis Night’ is coming November 9th. They’re continuing their witch theme as Walpurgis Night is a saint's day associated with witchcraft and demons. Named after Saint Walpurga, Walpurgis Night is celebrated from April 30 to May 1 in Europe and is associated with witchcraft.
Source: @GFRDofficial, C Hong at Soompi
I believe this is their first late season comeback? I associate them with early in the year and summer Korean releases, so this really did surprise me