It seems that the help menu have spoilers:
The units : there is all the units even the dark things.
The were a lot of talking in the blog because of the experimental tab and in the game just go to help and view all the experimental.
At least cw1 have a secret in the help that was thor, but with all the units showed, i doubt that the game will have surprises
In the Strategy Tips in the 3 it says:
Anti-creeper damage drones and block enemy packages (I immediately think in a corrupted liberty ship (or captain) for final boss).
Whoa is that what it is? Sounds awesome.
I'm just going to ignor that. No posting until I'm finished I think