Ubisoft confirmed it!
We are going to have another one WITH a multiplayer Beta
WOO WOO
http://www.joystiq.com/2010/05/18/ubisoft-confirms-assassins-creed-brotherhood-will-have-a-beta/
http://www.joystiq.com/2010/05/05/assassins-creed-brotherhood-placeholder-art-spotted-at-gamestop/
and Machinama has a crazy awesome teaser for you on Youtube