I am going to be nice and assume you are talking about FC2.
FC2 is one of those interesting games that really didn't get the fair shake it deserved mostly due to the fact it went out at the wrong time. It looks like they will keep the open world mechanics for the 3rd game which is good because that is probably the sole thing that really made it stand out from other games of its type.
Since its a big budget title you have a much better chance of it being good. Most publishers really can't afford to green light an expensive failure in this market. I would really reserve thoughts on the game until I get a hold of it myself. But if your a fan of the franchise you probably are already some what sold and in that case you probably wouldn't do wrong to give it a shot.
I am hoping this game will be as far away from the standard generic military type FPS as possible.