I just found a multiplayer trailer and an actually gameplay video showing the multiplayer in AC brotherhood. It seems to show some new ways of controlling your character and new npc/pc models as well. This makes me want this add-on even more.
Game info from the official website:
Live and breathe as Ezio, a legendary Master Assassin, in his enduring struggle against the powerful Templar Order. He must journey into Italy’s greatest city, Rome, center of power, greed and corruption to strike at the heart of the enemy.
Defeating the corrupt tyrants entrenched there will require not only strength, but leadership, as Ezio commands an entire Brotherhood who will rally to his side. Only by working together can the Assassins defeat their mortal enemies.
And for the first time, introducing a never-before-seen multiplayer layer that allows you to choose from a wide range of unique characters, each with their own signature weapons and assassination techniques, and match your skills against other players from around the world. It’s time to join the Brotherhood.
Features and Benefits
MASTER THE POSSIBILITIES – As Ezio, a legendary Master Assassin, experience over 15 hours of single-player gameplay set in the living, breathing, unpredictable city of Rome. LEAD A LEGENDARY BROTHERHOOD – Recruit and train promising young Assassins. Deploy them across the city as you see fit, or call upon them to aid you in your quests. EXPERIENCE A RICH HISTORICAL TAPESTRY – Collaborate with real historical characters such as Leonardo da Vinci, Niccolo Machiavelli and Caterina Sforza. WIN THE HEART OF A CITY – Use your hard-won currency to revitalize the crumbling capital city. Rally the citizens to your cause and unlock extra factions and missions. DEPLOY SECRET WEAPONS – Swiftly eliminate your enemies using tools such as poison darts, parachutes, double hidden blades, hidden guns, and an advanced flying machine at your disposal. MEMORABLE MULTIPLAYER – Choose from multiple authentic character classes, each with their own signature weapons and killing moves. With richly-detailed maps and a wide variety of unique multiplayer modes, you’ll never fight the same way twice.