Update: That didn't take long! The official trailer, courtesy of ET:
A good friend of GyllenBabble, who wishes to remain anonymous for obvious reasons, was kind enough to send us some contraband just now.
We know both videos have their issues - jumpy in places, dark in other places - but in the absence of an official trailer online (which we hope will be soon), these will have to suffice.
Edited to add some crude caps from the trailer.