Square Enix has announced another incentive, which they hope will encourage people to pre-order Lightning Returns: Final Fantasy XIII ahead of its release next month.
To sweeten the deal, if you are in North America and pre-order the game through Amazon, Square Enix will throw in Yuna's costume from Final Fantasy X. This is being dubbed the "Spira's Summoner" DLC pack and there's been no indication so far of its value.
There's no word at this point about a similar deal for European gamers, which is a little bit disappointing, but if you're from North America pre-order before the 11th of February, 2014, when the game releases. As mentioned, this is only applicable through Amazon.
The game releases in Europe a few days later, and if you pre-order through Amazon.co.uk you will get the Lightning Samurai costume pack.