After a quick look the first and most amazing thing I noticed was.....

MINION PACTS SO WE CAN

PLAY ALL MINION ARMIES!

Plus they mentioned that Minion Warlocks count as regular warlocks when determining how many locks you have in your army.  Since the Lesser warlocks clearly state "Not a warlock", I think its safe to assume they will be adding some minion locks at some point...which is pretty cool.

I suppose they could have written these things in just to make the book as complete as the WM book, but I doubt it.

Oh John, something for Rena to think about:

aDoomshapers "Primal Shock" spell is essentially channeled from a beast.  So cast it on Mulg, Mulgs STR is the POW of the spell.  Kill a model, Mulg says, "You gonna eat that?" and moves up for free!

That's cool if you like those stinky Trolls 

Now Circle on the other hand looks amazing.  The Druids with the Overseer have Immunity to three different advantages (Cold, Fire and Electricity), which is really going to put a wrinkle in the fighting styles of Cygnar, Khador and Menoth.

Ugh...don't remind me.