Source: City-17 (Since I'm too lazy to type it up at 1am :P )
M374llic4|RF: What features will really make the mod stand out from the others?
Argyll: We are out to achieve to put the player in a situation that would replicate combat as a modern Infantry soldier or Guerrilla. In order to accomplish this, we will implement the realistic features stated before. We will create environments replicated to real-world locations of where many conflicts occur, have occurred, or possibly will occur in the near future. Finally, we want to create the overall atmosphere like that of what it would be like in combat. Although, this is hard to do in a game, we will try to achieve it through sound effects and other methods.
View the entire interview here.
Update: While looking through the Op:CO-IN forums, I found a post containing several more renders of the RPG. Check it out here.