In anticipation of the Sky Dragon Rush dungeon hitting tomorrow, Gungho has released the details of the ultimate evolutions of the Sky Dragons. It is anticipated that the ultimate evolutions will be droppable on the highest difficulty of the dungeon, with the unevolved version dropping on the lower difficulties. See below for the details on the ultimate evolution materials.
Also, Gungho announced that they will be adding the drop change skills for the sticker girls to the lowest, un-evolved form (currently the lowest un-evolved form had no skill).
For the official story click here.