We've gotten our hands on some footage that appears to be for Ubisoft's Beyond Good & Evil 2, the sequel to the underrated 2003 title.
The footage shows a woman dressed very much like Jade was dressed in the 2008 announcement teaser for Beyond Good & Evil 2, running through a rundown looking town, avoiding police, climbing on top of a building and then making her ultimate escape via an orange helicopter. The visuals certainly match what little we've seen of the game so far.
The video was sent to us by a tipster, hosted by French Sonic site Eversonic, of all places.
If this turns out to not be from Beyond Good & Evil 2, I'd suggest Ubi steal it and use it, as it looks amazing.
Thanks Alan for directing us to the vid!