And @Wario64 is involved on both ends. (Allegedly.)
The Nindies @ Night even ahead of PAX West 2017 featured another Shovel Knight related announcement.
Yacht Club Games have announced a 3-pack of Shovel Knight series Amiibo featuring the stars of the three expansions: Plague Knight, Specter Knight and King Knight. The new Amiibo will add exclusive armor sets, new challenge stages and fairy companions to the game.
Suda 51 also announced during the show that Shovel Knight will be featured in some fashion in Travis Strikes Again: No More Heroes, including sporting a Shovel Knight t-shirt during a livestream.