Atlus revealed the foil cover sleeve for Persona 4 Arena The Ultimax's "Premium Newcomer Package" Limited Edition set, and it's pretty gorgeous:

As you can see, it's the rather dramatic and strangely awesome art of Persona 4's protagonist holding the P1 championship belt. The limited edition set also comes with several DLC packs, with the codes on special illustration cards drawn by character designer Shigenori Soejima.