Destiny 2's Curse of Osiris introduces a ton of new stuff to acquire. That extends to include the various Factions you'll find in the Tower, as Future War Cult, New Monarchy, and Dead Orbit all have new items in their respective inventories.
Most notably, each Faction has a set of the newly added armor ornaments, which allow you to further customize corresponding gear. Additionally, they have some new weapons, Ghost Shells, Shaders, Sparrows, and ships to acquire as you play. In the gallery above, we've rounded up all of the new the armor ornaments that the three factions offer to Warlocks, Titans, and Hunters.
Alongside all of this, Curse of Osiris provides new weapons to obtain and a ton of new cosmetics at the Eververse store. That's on top of the new playable content, which includes story missions, Strikes, Crucible maps, and a new planet with its own Public Event.