According to the site, pre-orders before Thursday, October 21 will snag the customer a code to redeem a Tri-Weapon pack. As the name suggests, this gets you three new weapons - the Boost Machine Gun, the Laser Cannon and the Anti-Armour Pistol.
The game releases a day after the pre-order offer ends, on Oct 22, but before slamming down your order you might want to try out the playable demo, which is due to hit PSN and Xbox Live on September 1.
Via: CVG