From the Kickstarter campaign page:
All Base Game Components Plus...
1 Quest for the Golden Mushrooms Rulesheet
7 Mushroomfolk Meeples
3 Golden Grotto Map Cards
Deluxe content features the mini-expansion Quest for the Golden Mushrooms! In this mini-expansion the goblins have captured some of the most magical mushroom folk of the land and the heroes that can rescue them will be generously rewarded!
Quest for the Golden Mushrooms adds a capture-the-flag element to Tiny Epic Quest, as well as some additional variability through the addition of Golden Grotto Map Cards!
NOTE: Kickstarter-Limited Exclusivity - Deluxe content will not enter regular distribution. However, it will be available in limited supply at conventions, through contests, online at the BGG promo store, and directly from Gamelyn Games.