Though it could be additional world lore excluding Umbral Era stuff if you think about it. They do a decent job fleshing stuff out in posts (that people complain about because it's not about raids or gear) but there's still a bit of lore they could touch up on. Just check out the localization forum, a lot of that isn't immediate spoilers but stuff they could easily add to a 'codex' or something on the website, that's how I generally interpret world lore..info about everything from naming conventions to stories that isn't/won't be present in game in full (think: Vanadiel Tribune.)


I think the trailer mainly is what contained spoilers they wanted to avoid showing off/flesh it out better.