There is nothing fake about this. All of it is based on source material.
We are introducing the vehicle in the finished state it was designed, planned and intended to be in based on all available source material. Not the incomplete state the prototypes found themselves in.
Many vehicles in War Thunder follow this exact situation and there is nothing new here. The tank as a whole is entirely as it should be with the additional frontal plate protection it was intended to receive to make it combat viable as many vehicles in game find themselves.