There have been sneak peeks of a horror story we are in the process of writing. It will take place in the Brothers Found AU (Where Jacob discovers Sam before Dean), and will revolve around a case where Jacob shrinks down to about an inch and a half. It will be the third story in that series.
Current sneak peeks for it:
If you ever want to see the current sneak peeks we have, please go to the brothers apart page and under The Stories link you can find Sneak Peeks, or click here! (may only work on a web browser, not the app)