I'd imagine at the very least we'll very soon have their arrival on the scene (from their own perspective), and the initial meetings with Eol and Dwarves.
We will need dwarves in Season 3. For one thing, Thingol needs to build Menegroth ASAP, because the wolves are at the door. For another....we will be introducing Men in Season 4, and they will need to seem like newcomers with the Elves, Dwarves, Ents, Orcs, Trolls etc already present in Beleriand when they arrive.