It turns out that reddish image of Aya Brea from a recent retail promo box was actually The 3rd Birthday's box art. Although there's just a bit more to the final packaging.
The game's Twitter feed shared a final image today:
It's a bit hard to see, but the packaging has a foil effect. This is just for the game's first print run.
Also at the game's Twitter today, a couple of confirmations of what you won't be getting with the game. There will be no pre-order bonus or purchase bonus for the game. Also, the Dissidia 012 Final Fantasy Aya Brea download code is just for the retail version. It will not be included with the download version.