All credits for this find go to Kerberospanzer from US forums.

Hello everyone,

finding differences in models between versions is not really that simple. It’s a process that takes a while and sometimes (I hope not often), something simply “slips through the cracks”. Kerberospanzer discovered an interesting change in Panzer III top turret. Check this out.

This is the pre-9.0 Panzer III

Notice specifically the mantlet. And now, in 9.0:

There is no reason for this change – at least not historically (here, you can see the tank with the “original” mantlet in real life):

Either way, I screwed up the part with the armor thickness, that was my mistake (I was by accident comparing stock and elite turrets), I apologize. The real change is this. The mantlet really lost 20mm of thickness. This is the L/60 version (top turret):

As you can see, the mantlet is now 50mm. Strangely enough, for the L/42 gun, the top turret still has the old (pre-9.0) mantlet, that looks like this:

As you can see, for the L/60 gun, the turret lost the 20mm plate in front of the 50mm one, so it’s a nerf.