The pictures at the blog show us two maps. Berlin Outskirts and Alpenfestung. Its not confirmed that the tank will be used. But the high command (what the movie tell us) say that apperently this tank wil be use here. They not sure, but they think so. Why i do this? Because the war was thinking. Hitler thinks that the allieds attack Calais. USA thinks that Japan will not attack. Etc.... but they all wrong. Maybe the movie is wrong, but it can be right.
And its more propagande to show the public the Maus will enter the mod. We see the tank on the repair place in Alpenfestung, so they spot it there.
okay i got it