There's an FAQ and Errata for the Imperial Armour Books and it solves some but from my experience not the most asked issue.
Big guns are back!Isn't it a little bit embarrassing if you release new rules and allow DKK to take 14 other units and then a few weeks later have to update this list by 22 units that were obviously missing but legal?
And yes, big tanks and big guns on carriages are back. And Demo Charges for Engineers. But that's almost all the good news I found.