There are obviously some disks that are not revealed, There won't be three aspiring necromancers or runesmiths, and likely only one maybe two engineers. The reasoning for this is that the necromancers/runesmiths are casters, and no other race has more than one secondary caster in their army. The VC don't need to have more because they don't suffer from the need for secondary casters like they do in table top.
My guess is that the VC army list will likely be 3 skeletons, 2 skeleton archers which qualify for skeletons for Kemmler's ability, two or three dire wolves, one or two tomb banshees, betting on one, one or two Grave Guard. And the Black Carriage, if that is what it is, would likely be a large, since no race only has one large disk, even the orcs have two (one is a hero) and there is no large hero disk that I can see for the Vampire Counts.
Likewise we will see one Runesmith, and likely one engineer in the dwarf army per box set. This is going off of what has already been established with casters, and what the Engineer would likely fall under for any other race that would only get one of that particular disk, Huntsman for Empire, Big Boss for Orcs, Maiden Guard for High Elves