After looking closely at Griff's Toyfair pics and Takara's PR pic I'm not sure there is any difference between the two. There are only minor differences in the shade of the plastic and that can be explained by professional lighting on the Takara pic.

There is a long way between now and September and because of PC not taking Zippay I now have a cancelable order at HLJ so if there is no difference or a tiny difference between the two I'll cancel the Takara Trypticon and get a Hasbro one. I'm guessing it will be a Toy Sale item like Devastator and Fort Max.