Originally Posted by Cha0sniper
How will we know what's been retconned and what's merely no longer mentioned? Should we assume that unless the new lore directly contradicts the old lore that the old stuff is still all valid?
Yes that is a good way to think of it.
Also, we don't actually want to "invalidate" anything. As we update lore what is currently canon will also be updated, but previous iterations of lore are still valid they are just not current.
Our goal is to make the current lore the best lore, but there will always be individuals who prefer earlier iterations and we want to support that.