Necrotique:
Well, I’ve been back at work, so have had more time to read and buy, and less time to spend painting. The plus side is I’ve been able to paint little bits of models at a time (really helped with the Mammoths and Toadies) but that I can also read a lot more.
Recently I’ve read two of this years book - Knights of Brettonia and Wulfrik both of which heavily involve Chaos Dwarfs (with one beseiging Courrone and the others defending their Ziggurat “Dronangkul” from the Norscan Marauders)
From what I’ve garnered I can safely say there is a possibility of new units being released soon of the following descriptions.
Infernal guard - already happened.
Immortals - elite infantry that help guard the temples.
Slavers - lower than the Immortals but higher than hobgoblins
"Harridan" - female Chaos dwarves beyond the age of breeding, dedicated to defending the temples and living as monks (think Teutogen Guard but short and female, also bald and with horns) They also have their tongues burnt out as soon as they are past child-bearing age. In contrast to the female CDs who can still breed, these are scorned and hold little more value than the Infernal Guard.
Exo-suits - the high priest in Wulfrik wears an exo-suits of black marble and obsidian that spouts steam and jets of magma from its pistons. Is said to “make him taller than a man and as massive as a troll” Also, makes him able to crush solid rocks with his gauntlets, has hidden blades (like the Assassins Creed series) and has wicked suspension allowing him to “absorb the shock completely of the 50-foot fall” It’s also equipped with a Fire-Spitter which is like a portable warpfire thrower that throws fire. Or a flamethrower, either way 
Lanterns - I know, not technically a unit but sheds light (hehe) on how CDs can project light from their Iron Daemons, towers, lanterns, etc. All light sources of the CDs are said to be bound daemons behind thick obsidian, their rage shining through solid rock as they eternally try to scratch free. This bit really appealed to me.
Lammasu - confirmed but is described awfully like the “black and red manticore” from the Storm of Magic expansion. Also sounds more like a beast to be guided than a revered spawn of Hashut.
Death Rockets - confirmed as are blunderbusses, though the blunderbusses are widely used by the Slavers along with flails, hooks, chains, etc.
Magma Cannon and Death Shrieker - not mentioned by name but are used to defend the gates of the fortress Wulfrik besieges.
Bull Centaurs - very scarce and revered, are commanders of the “base” infantry such as Infernal Guard and Slavers.
Sorry if all this has been mentioned elsewhere (I could not find it) but I thought it’d be worth sharing and I’ll add more as I go. Mainly because I’ve noticed lots of books last year on refer to CDs more and more leading up to their release, as well as mentioning units which have now been released. Hope it helps or at least gives some hope to the new releases 
:cheers