Just to follow up on this, it appears the beta sign-up with the FFXIII code is no longer a possibility. For one thing, the beta sign-up site where you enter the code now redirects to the Lodestone. For another, the special Campaign Code was only offered in the "first release" boxes of FFXIII for the PS3 (the so-called Lightning Edition) and is no longer being issued. If you do manage to find a code, you can submit it for a pair of Asuran Armguards
, however. But whether it will offer access to the FFXIV PS3 Beta seems doubtful at best.