I found an actual in-game video. I'ts pretty amazing although it's not English.  I doubt you'll be listening though... Anyway,  check it out as it's the only in-game play I've seen...

http://www.examiner.com/x-6151-St-Louis-Video-Game-Examiner~y2009m3d30-Operation-Flashpoint-2-gameplay-footage  

Enjoy

I usually post up some comments but the review at IGN is really good so I thought I'd point everyone in that direction.  It's worth your time to read the review as it's the first hands on & these are usually pretty meaty & point to many concerns (None for Flashpoint 2) & must maybe they have the first capable AI.

http://pc.ign.com/articles/967/967683p1.html

Enjoy