I am sure that this has some form of story importance, be it for the new title or older IPs. Either way one thing I hope here is that this is a taste of the cinematics we will get to look forward to when Hitman: Absolution finally comes to disk for us and that this isn't something made up specifically for E3. It is gorgeous enough to be just that, but with how the game has been looking so far I have high hopes that this is something from the game directly.
On a side note, if this was the way that nuns looked when I was growing up I seriously might have thought about going to Christian run schools. Also, if this is how they act when not preaching, I also probably would have risked "Altar Boy Fun" to join in on this kind of fun. Alas though, game worlds are nothing like the real ones now are they.