OK, I know that the new thing is D-Day: British, but I'm still going over all of the D-Day: German releases!
Opening the box, you get a clamshell-style plastic tub, as well as a plastic sleeve with cards. No instruction sheet, so you'll need to go to the manufacturer's website if you need assembly hints.
Opening the clamshell and removing the soft foam packing material, you find the tub is split into two compartments. One holds three resin hulls. The other holds all of the metal components.
Here is the resin hull:
On my three hulls, the grill on the hull sides needed minor clean-up, and one had a small 'bubble' cavity in the grill side (trivial to fix).
The hull interior is much more basic, a little less straight – but once you get the parts in there, you'll hardly see the interior.
The track pieces are marked so you know right from left, and fit nicely to the hull.
There is a projection on the hull and a slot in the tracks, so that you know where the track should sit front-to-back. (You may need to trim the tracks first.)
The howitzer pieces will need some minor clean-up. The pins on the sides fit into grooves on the hull. One of my samples has a muzzle that needs some clean-up.
Two small pieces are the travel lock (glue to the front hull) and a machinegun (which, curiously, is not shown in the pictures, or mentioned in the online instructions).
Three crew figures are provided. (Two of them I recognize from the Wespe set.)
I don't see any painting instructions online from the manufacturer yet. It would be useful for them to show gamers how to handle the interior of these open-topped artillery vehicles, and how to paint the crew figures.