Yeah I am confused by the summer 2010 bit. I hadn't seen that trailer before posting it. I was going from the IMDB page where it says coming soon, in theaters January 1st. Maybe it had a distribution issue and was sat on the shelf.
Here is the IMDB page;
http://www.imdb.com/title/tt1558575/?mode=desktop
Also when I mentioned the violence I was going by the trailer on IMDB which shows some horrific bullet hits to waist gunner and co pilot.
I think the CGI in this is far superior to that in the Red Tails trailer. Some of the shots are photo realistic, particularly the B17 over the desert. Be interesting to see if it is all CG or if they had a real aircraft for the shoot.