I've seen NicholasHMCaldwell mention "Something Wicked, Something Wondrous" in some 2018 post.
It appears to be something that will introduce a talent to increase the limit of known spell by 5, add cone spells, add Witch and Warlock.
It seems really exciting but I can't find anything more recent, and I can't find anything in the official website Catalog section.
Is this a dead project? Something that only existed for a previous version of Harp? Something still in development?