As far as I can see, the Lost Omens books have focused thus far on the Inner Sea region, limited to southwestern Avistan and northern Garund. I know that 2024 will bring us new books for Tian Xia.
Will more about the other continents be revealed in the near future? Are those intended to be left for GMs/players to have wiggle room? I'm trying to understand the world starting, effectively, from scratch, so as much as I can gather (having started Pathfinder about a year ago) would be very helpful.