New CKII DLC has been announced, called "Way of Life", seems to be focusing on RPG features, particularly relationships.
Announcement from the forums:
While I'd normally be very happy with this sort of DLC similar to SoA, as opposed to a timeline or map expansion, I frankly feel very, very apprehensive about the whole thing because 1) it was announced so soon after CM was just released; and, 2) their planned beta patch system just seems a bit off to me (how will it even work? will it be like steam early access or some sort of pre-order bonus or something?), I understand they don't want a buggy mess like almost all the other major DLCs caused, but why couldn't they better utilize their actual beta testers (as I've heard the current devs really haven't been utilizing their beta testers)?
Well, we'll see how this goes. RPG-focused stuff is always nice, I've always preferred that anyways.
You can opt-in to betas and such (like old versions) in the preferences menu thing.