[2020] Could this mean Gaijin has to remodel the E-100 turret?

Tank Encyclopaedia is not exactly a valid source by itself.

We dont have any plans to rework the turret at all. Unless serious documentation can be presented. Even at which point, only a few thousand of the tank are in existence. The fact it even exists in full form is due to creative licence of combining all logical and available components (E-100 hull + Maus Turret).