You can liberate thralls to join you, gain powerful buffs, and interact with new vendors, among other surprises. Three factions - the Stygian Mercenaries, Black Corsairs, and Accursed - have put down camps in Siptah, each of which will allow you to engage with new activities. These changes will affect the landscape of the area, so if you've got a camp on Siptah, make sure you check out the devs' blog post to see if it'll be affected. You'll also find plenty of new NPC camps on the Isle of Siptah in Conan Exiles.
Conan Exiles' latest update brings new gameplay changes as well as the single-player offline mode.