Board Thread:Wiki-Related Discussion/@comment-2153169-20170420215606/@comment-91424-20170421061432

I think we need to use our discretion and distinguish between different elements. I think most users agree that we should not stop using filming reports and promotion material for actual appearances (excluding mentions). As for the information about Emma's upcoming wedding dress, which Lady uses as an example, that should definitely not have been deleted, because that was production notes/behind the scenes information, not in-universe information. I mean, it's not like Emma is going to say, "My dress is inspired by the one worn by Grace Kelly during her wedding with Rainier III of Monaco."

On the other hand, in-universe information from sneak peeks and set reports is something that would be better left alone until after the episode airs, because things aren't always as they seem. The best example I can think of is Lily's so-called "daughter" from 419. People who observed the filming, reported that Lily had a daughter, and if I remember correctly, that was added to her page. Later, it turned out that Lily did not have a daughter after all - the girl that was seen during filming, was merely pretending to be her daughter.

So I suggest that we modify the rule, and distinguish between appearances* and production notes/ behind the scenes information, and continue to apply the rule to in-universe information. That should make things clearer for everyone.

* Not mentions, but actual appearances - someone or something being mentioned is tricky, because it many turn out that said someone/something is in the episode after all, like in archive footage.