as quoted from socom.com, this is what to expect today so keep a eye on the email you registered your socom beta with!

* Go to the PLAYSTATION® Network Icon on the PLAYSTATION®3 XMB™ (XrossMediaBar).
* Select “Account Management.”
* Select “Transaction Management.”
* Choose “Redeem PLAYSTATION® Network Card or Promotion Code.”
* Enter the SOCOM: Confrontation Public Beta code which you received in the e-mail.
* Click “Continue.”
* The download will be available on the next screen.
* Redeem and download your own SOCOM: Confrontation Public Beta client first, then give the code to two other friends.

read the whole story here