Game.co.uk have it listed as been released in 444 days time on the 24th September 2010.
There is a trailer from E3:
[video=youtube;ywmQf9biNLc]https://www.youtube.com/watch?v=ywmQf9biNLc[/video]
Double click to open it in YouTube and watch in HD
No screenshots or any other videos have been released I don’t think.