In a development update this past weekend, Rhino Games' Noah has announced that we'll be seeing subfactions being explored in the new set.

Quote From Rhino Noah

We're so happy to see everyone enjoying the Rings of Immortality expansion. We're also proud to announce that the gameplay design for our next expansion will be wrapping up very shortly (possibly as soon as later today) and we have some details to get your minds wandering.

We're going to be exploring some "subfactions" within the various factions in Mythgard. I hear that the Orange subfactions are "The Resistance", "Magic of the Desert", and "Thearchy". You can also expect to see several more Jinns but maybe with a brand new twist!