Oh yeah! This game was one of the firsts i saw on the next-gen library, and it really caught my attention. It seems to be an action game, with many stealth elements, since the developers said that most of the fighting will be defensive, and people will be real hard to kill.
The interaction with the crowd (if they like you, they can block the way of guards that are following you, but if they don't, they'll block you!), the game extension (was it Acre, Jerusalem nad somewhere else? Oh, plus the country), and the possibilities seems indeed, very good.