Shovel Knight dev Yacht Club Games has announced the release date for their game's upcoming expansion: September 17. Plague of Shadows will feature a new character, the Plague Knight, and will be released for all versions of Shovel Knight in a free update. Trailer for it is above, in case you missed it last month.
It's funny, I distinctly remember being on the Plague Knight's bad side the last time I played the game. Maybe there's more to its story?