ProgAce:

The game's not a variant at least in the normal sense.

That cover was given to EB pre-orders as a bonus to replace the regular cover. It came in a smooth, almost wax paper like envelope with a seal on it. It's kinda like the Okami thing - not a variant release, just a different insert release.

I sent someone a complete-in-package one on #vbender, ask around and you should be able to find who it was.