The pre-order bonus for Killzone 2 – if you order it via EBGames or Gamestop – is a special code that will give you exclusive access to the Killzone 2 Demo. The codes will be sent via email on February 3:

Reserve Killzone 2 and receive exclusive access to the Killzone 2 Demo. You must have access to Playstation Network in order to redeem promotion code. Available for online and in-store customers, while supplies last.

Online Customers: Codes granting access to the Killzone 2 Demo will be sent via email starting on February 3rd.

In-Store Pickup / Store Customers: A rave card granting access to the Killzone 2 Demo will be available at time of game reservation.