My speculation for what'll happen in 9.2:
Bolvar and the Eternal 1s will refurbish the helm of domination of instead of just controlling the Scourge it will bind Zovaal.
The Jailer will reach the Sepulcher and ofc, the champions will stop him but he'll succeed in remaking the world. The Shadowlands and Azeroth will forever be merged and the spirits can freely wander Azeroth with free will and those who die can choose who they can serve in the afterlife.
Sylvanas's punishment will be to wear the Helm of Domination to bind the Jailer to a special prison in Zereth Mortis and control the Scourge on Azeroth. Anduin and Calia will return to Stormwind and Orgrimmar but be denied their throne by Turalyon and the people of Stormwind/Lordaeron respectively. The Dreadlords of the Light have infiltrated Azeroth to trick and deceive people into believing the Light is their future and savior as well as Yrel and her Lightbound led by AU Garrosh, defending Azeroth for years against the Scourge while we were in the Shadowlands to reinforce this position and this will lead us into 10.0