http://forum.paradoxplaza.com/forum/showthread.php?660298-What-is-this...-Day-One.
Possible hints to new DLC. If this is true then I'm a little bit disappointed that they haven't taken a break to balance out the game at all. Republics are fairly broken and Muslims are just insane.I suppose new features are welcome since modders seem to do a fine job balancing the game anyway.
The thread links to a facebook page which has a mostly blanked out picture that follows CKII's artstyle. Judging from the very small portion of the picture presented I can make out what appears to be a stormy sky with faint traces of aura borealis and a half frozen sea. To me this indicates either two things. Playable northern pagans (most likely) or a northern crusade expansion/the rise of the Teutonic Order - this may (although unlikely) include playable theocracies and/or holy orders.
Of course the most sensible thing, in my eyes, is to release playable northern pagans while expanding the northern crusades as well. What we get depends on whether they plan on doing a "small" Legacy of Rome DLC or a bigger more fleshed out expansion like Sword of Islam or The Republic.
Possible things we could see in playable pagans could include:
No concept of bastards.
Tribal successions laws. Highest marital inherits, etc.
More fleshed out conversion and resistance to conversion.
A new set of non-Abrahamic virtues/sins.
Being able to incorporate non-blood into your dynasty.
New dynasties or "clans" being formed when relatives declare independence.
A system of "honour" might replace piety which monitors stuff like oaths.
Tribal succession crises.
Cults and lesser deity worship.
Raiding and thralls.
Blood feuds/clan warfare.
New UI, new sprites/faces