To some extent, at least. The reason I bring this up is because it is appearing on the net as an official release on Square Enix. Allow me to clarify. The Final Fantasy XII box-art you see snipped above and over at RPGSite is fan-made. It was submitted to VGBoxart on September 30th and can also be seen in our gallery.
It was obviously based off the box art shown off at TGS, which looks exactly the same, but whether or not Square Enix will actually be using it is as the final box art is a mystery to us.
So yes, it’s fan-made (the digital version, at least).