Ezio will have a bevy of entourage members he can call upon (i.e. pay for) in Assassin's Creed II to help him complete his various objectives. Here's a video spotlight of the Courtesans, Thieves, and Mercenary factions from the game.
Also, be sure to catch the ending. Vindication to anyone who's ever grown tired of wandering bards
ACII nears it's long-awaited console November 17 launch date.