User blog comment:StrangerThings/I Can't Believe Its Not The End Times!/@comment-24909831-20170208095829

I think that only reasonable way to deal with any canon conflicts regarding older and newer editions is to mothball such articles under Template:Old and to watch they are not further edited before made canon friencly.

I am not exactly what is the relation between Fall of Cadia and older lore, such as Codex: Eye of Terror. However, because it happens in 999.999.999.999.999.999.999.M41, I find it hard to believe it would actually affect that many articles here in any case.

What comes to events set past 999.999.M41, it is agreed on 40k fanon that all fanfic which takes place after that date are considered as extended timeline and are so prohibited. I'm going to get those books, and I think we'll have some talk with admin team at first when it comes a bit clearer how these new books are going to affect 40k lore. I honestly don't really believe they will.