Wolves of the North , the first deluxe expansion has been announced and will release before the end of the first cycle. With AGoTv2 we will be getting deluxe sets on their own schedule instead of in between cycles. This mean faster growth in the card pool, more evergreen cards than usual and no change in the rotation as the cycles seat the same.
The first expansion will focus on Stark but have 2 no loyal cards for every other faction and 6 new neutral plots. Looks like House Tully and Winter will start to fill out as well.