Assassin’s Creed Brotherhood’s beta was previously only available for those who pre-ordered the game on PS3 but now the beta is open to PlayStation Plus subscribers.
Sony announced on its PlayStation Blog that it has worked with Ubisoft to give this opportunity for PlayStation Plus subscribers. To book your place in the beta just visit the PlayStation Plus category on the PlayStation Store for more details.
You can submit feedback on the beta on the PlayStation Blog or Ubisoft’s forums.