Talking to a Satff member, the rumour and talk is that this release is going to be a 'strange one'. Exactly what that means is not clear to anyone, yet, although the rumours I have heard (and both of these, I believe, originate on Warseer and both discussed with said Staff member who is as unsure as anyone on which is true) are:
1. There are going to be re-done versions of old kits, which might include such things as plastic Ushabti and Bone Giant.
2. None of the units in the book at the moment are being re-done, the new kits (plastics I would assume) are all being devoted to the new units in the new Army Book.
Either way, the word is that what's being released is very, very special. Whatever transpires, if the trend in new plastic kits continues, I am perfectly ready to believe in the specialness of whatever is released.
Please don't ask me anything else as I don't know anything except what I've posted. If anything is let slip, then I'll post it if I think it won't get anyone into trouble.