Via A-Stone Toys Facebook page and Tformers

A-Stone toys have announced that they have acquired the licence to produce and promote a superdeformed version of Fortress Maximus, which will be available for purchase for one day at Japan's Wonder Festival this year. TF 01 Fortress Maximus transforms and will come with his gun and Master sword. Images also suggest Brave & Grand repaints.
It isn't unusual for companies to be granted a one day licence from Takara in order to officially promote and sell their products at the Wonder Festival- like Jizai toys have done previously.