Board Thread:General Wiki Discussion/@comment-4050367-20130629023853/@comment-5163958-20130701031239

A Fanon Con, or Fanon Convention, is when users reveal small spoilers about series, or other projects they're working on, and are held at the end of each quarter (Winter, Spring, Summer, Fall), and usually last for 1-2 weeks.

But, you have to create your Fanon Con submission AND notify whoever is hosting that quarter's Fanon Canon (usually an admin) before it starts.