I assume everything thats relevant will be explained in game, onces there's a game. So far we haven't hit a town yet, and it'd be weird if randos in a druid grove or goblin fort were sitting around exposition dumping about the last century? I expect once we hit a town with a library there'll be books and scholars arguing like BG/Kingmaker/PoE/tyranny/etc did lore, maybe even the evil fortress we;re headed to next. But I wouldn't expect the wilderness to have it.
Also thanks, the reincarnation stuff sounds lame but the rest sounds like it could be fun to come up in game. Especially high level diplomacy between the city states? It could be like arcanum where there's quests dealing with unification and you dont find out till the end of the game if your actions contributing to that or made it all fall apart.
I liked the old Zhents, but having local groups probably makes them more interactable, you can run quests for them and stuff as there just another local faction with local interests and ties to the community, just an ideology rather than like a foreign nation? idk, that's how I read that anyway. I hope they turn up once we hit the city then