User blog comment:EnderEmerald46/Fanon Ideas/@comment-1874924-20130203182802

The term you want is "fan fic", not "fanon". Fanon is a different concept, referring to fan-generated theories that a significant portion of the fandom accepts as canonical despite a lack of conclusive supporting evidence, simply because there is no conclusive contradictory evidence (although such contradictory evidence can and sometimes does appear in future canon seasons/books/movies/etc.). A story set is a future season is therefore not fanon, by definition.