So the latest episode of Loremasters is about the gnarlwood and towards the end it talks about the various warbands and factions that are there. It mentions that Sylvaneth groves are trying to reclaim parts of the gnarlwood but we don't know how successful they have been. Then talk about various warbands and factions such as free cities, jade obelisk l, karnak bloodbound, beastflayers, ogors, kruleboyz, rotmire Creed, horns of Hashut and purifiers which seem to be nurgle linked. I've not heard of them before so maybe new warband incoming. But this also points to warbands for Sylvaneth so maybe kurnothi release here as well as ogors.