Obligatory spoiler warning.
I've compiled a list of the lore you can read/interact with in v12. This includes the dive spots in Aquamarine Cave/Route 6, the Xen Backup Lab, and Route 11, as well as Zone Zero. I might go back later and add some stuff from side quests, but we'll see. I'd recommend going to all of the spots yourself, because you can get items in each of them and I don't want to spoil the surprise of reading everything. The list below is just an easy way to review everything in one place. I'm also not going to give specifics on how to access these places, which is a discussion for another thread. That being said, enjoy!
Xen Backup Lab: