On their Twitter, Yacht Club games posted a piece of promotional art for the upcoming expansion for Shovel Knight, in which players will take control of the mysterious Specter Knight. The campaign has been officially titled Shovel Knight: Specter of Torment, and according to the promotional art, it will be releasing some time in Spring 2017.
— Yacht Club Games (@YachtClubGames) September 12, 2016
In responding to curious tweets, Yacht Club has explained that the reason for this push back from 2016 is due to a desire for more extensive playtesting. As revealed in Yacht Club’s official reveal of the Specter Knight campaign back in June, it will be released in tandem with one of the extra modes, either Body Swap or Battle Mode.