I must confess that when I heard of this last year I wasn't very hopeful because the level they showed was nearly linear and 47 was jumping around like Altair.
Add to that the latest trailer with latex clad nuns wielding rocket launchers and automatic rifles and I almost gave it up on this game, thinking that it had become the latest victim of the streamlining and 'mass-appeal-mania' that has been rife in the gaming industry these past few years.

The E3 demo and it's reviews have reaffirmed my faith to some extent though. Looks like we're getting another good old Hitman game after all.
(Also I think it's also been confirmed that they're doing a second movie, at least the game devs seem to think so)

Nun free demo preview.