The prophet/varen reappeared at the end of the orsinium story line and warned us about an upcomming daedric civil war, which happens when sotha sil's clock work city is found which happen in the 4th quartal of this year.
Clavicus vile is already involved and he mentions partners which are likely other princes because nobody else is equal to them in their eyes.

There are 16 princes, but molag bal is severly weakened. We destroyed his physical body which needs too regenerate, which leaves us with 15 princes.

So...a civil war is a war right?

Zos seems to favour 3 team based pvp. First the 3 alliances in cyrodiil splitting up 9 of the major races and imperials are special.
Now battlegrounds got 3 teams each too.
15 is divisible by 3.
Half life 3 confirmed by the way.

If sheogoraths team is too op we can give him peryite.


But yeah i think there will be 3 daedric factions who will duke it out over tamriel with tons of pvp content.