Check out the list of rewards possible by cashing in your Uplay points. So far, only PS3 and xBox:
http://uplay.us.ubi.com/win/actions-rewards/assassins-creed-brotherhood?utm_source=CRM_US&utm_medium=email&utm_content=uplay_rewards&utm_campaign=ACB_Uplay_Win (http://uplay.us.ubi.com/win/actions-rewards/assassins-creed-brotherhood?utm_source=CRM_US&utm_medium=email&utm_content=uplay_rewards&utm_campaign=ACB_Uplay_Win)