So with the latest developments and according to some rumors we could see:
Citroen: Ogier, Meeke, Breen/Lefebvre/Al Qassimi/Loeb (maybe 4 cars on some events, otherwise rotate as convenient)
MSport: Evans, Ostberg, Suninen/Camilli (DMACK)
Hyundai: Neuville, Mikkelsen, Sordo/Paddon (possibly 4 cars, drivers nominated as convenient)
Toyota: Tanak, Latvala, Lappi (+ Hanninen if bosses in Japan approve money to run 4 cars)
This would be pretty balanced between Hyundai, Toyota and Citroen. Potentially the big player is Ford but the more time passes the less likely that becomes. In any case Hyundai has nicely strengthened it's lineup and will be in the fight for both titles whatever happens next year.