According to the 2014 post by Chris Hughes, the following link should allow us to submit our apps for the showcase, but is now showing a 404 error: https://developer.spotify.com/community/showcase/submit-your-app/
Furthermore, the showcase page doesn't have any options for submitting an app.
Showcase page: https://developer.spotify.com/community/showcase/
How can I submit my app to the community showcase?
Solved! Go to Solution.