Here's a look at the slip cover that will adorn the Persona 4 Ultimax Premium Newcomer Package, which comes with the story from the first game so you don't have to go out of your way to catch up (it will also be sold separately as DLC).
You (if you're in Japan) also get a glasses pack for all of the fighters, Teddie as a navigator voice, Mitsuru as a navigator voice, and a 12 song OST (listed below), along with an illustration from Shigenori Soejima
At least some of you will be able to beat on that Teddy bop bag.
"Burn My Dead"
"Pursuing My True Self"
Persona 4: Golden