Oh thanks! More content for the game is awesome!
Now that you've described what it is, I was able to find it on the campaign page. I'll quote it here for future reference of others who come across this thread:
Folklore 2nd edition Kickstarter wrote:
This coming July (2018) [edit: I think this is now August] we will release the first of four chapters, unlocked by this tremendous community of a PDF side-campaign. Each chapter is meant to be played in between the main stories featured in Folklore: The Affliction, and will end in a choose-your-path moment. We'll be asking members of the community to vote for which path their group chose - and the most popular choice will become cannon, shaping the the step chapter and the world of Folklore. Chapters will be released on a monthly basis.