Rules up on NZ pre order. Sorceror of Nurgle, extra 60 points for two blightking meatshields, +1 wound, and +1 save. Not to mention +1 spell once per game. Pretty good if you ask me. Comes with Blessed Sons keyword. Most interesting to me is that the Virulent Discharge from the Wurmspat means Fecula has regular healing, not that you need to keep the boys with her.
Also, am I right in saying that both can be taken in a plague cyst, with the wurmspat taking one of the mandatory blightkings, as they are a unit, and have the blightkings keyword?