Indeed. I nearly bought up these guys recently, but when I saw the Crimson Court and Cursed City, I opted to go that way instead.
I'm getting the feeling that many of the new models from Cursed City, like bat and rat swarms, skeletons, zombies, etc. will be available as individual kits. The new Soulblight Vampires are going to be customize-able, and will be able to make use of these.