Hey fair enough,
But to me there are No 'new rules' for those two formations. For example: Because Stormcast units points changed, are we now invaliding their use in the slyvaneth warscroll battalions because they arent mentioned in this stormcast book?
I am just playing devils advocate here the community will have to decide of course. I didn't build either of those formations yet out of such fears of nerf'ing in matched play myself.
Of course we pick and choose the rules we use in all settings, base to base/model to model etc.
Cheers!