Yes, I also found this whilst cruising around on the web:
To get access to the Assassin's Creed Brotherhood you will need to preorder the game from selected retailers.
Then simply follow the simple instructions below.
PROCESS
- Step 1 : you pre order the game
- Step 2 : the retailer gives you a Ubisoft code (depending on retailer this is either 1 week before the beta launch or at the point of preorder)
- Step 3 : you enter your code on the following page
www.assassinscreed.com/vipbeta- Step 4 : you got confirmation that your code has been accepted
- Step 5 : you receive your official PSN code a few days before the Beta starts
- Step 6 : you enter your code online, download the beta and in the end, you can play!