So breaking it all down a bit from my understanding of the site based off the PhantaFriends.de reports and these pictures:
On the left hand side: Starting at the bottom we can see the underground station and transfer switch tracks have now been completely enclosed. The 3 large openings are where the transfer switch will lead into the 3 maintenance bays (yet to be built). On top of this then the roof forms the next level of the area which is the same height as the neighbouring Wuze Valley so there can be a step free access between the areas. You can also see here the new ramp so construction vehicles are now able to drive into the construction site. The new massive towers as predicted above presumably serve a dual purpose of being theming structures for Rookburgh and the flat plated backs of them are the start of the facade walls for sound proofing and visually separating the areas.
Middle: At the back of the site, along Maus, the underground level has been enclosed. Still not much visible vertical construction in the centre of the site which is curious. The foundations appear to be varying heights here as well which just makes it even more curiouser...
(oh how I wish we had Tobi's model to make sense of things) There is this new black steel structure which is not coaster related and different to any previous theming structure and in front of it are two unfinished tall coaster supports - so most likely the coaster will interact with whatever the structure behind it will be.
On the right hand side: A lot of new supports and new track parts extending the layout pieces erected last year. The surface which this track is on is the same height as the Berlin street and this is the tunnel from the new gateway in Berlin will exit - so you will step out with the facades and buildings towering around you and the cluster of coaster track over head. Underneath are the underground tunnels housing the start of the launch (left tunnel) and the break run (right tunnel) - as seen these track parts are now mounted onto the ceiling (wrapped in green tarpaulin for protection). In front of the launch tunnel is this large almost V shaped support which I presume will support the weird curved/half loop/Immelmann launch. The new tall support behind seems to be where the coaster will most likely go after the launch which shape wise suggests to me an Immelmann of some kind??
This really is such a confusing site with how layered, complex and compact everything is. Makes Klugheim seem like child's play. Really intrigued to see how things progress.