For those more interested in the game than the admittedly fascinating and never-before-heard-on-these-boards leaning discussion on this thread, I thought I'd offer some initial impressions based on maybe 10 hours with the PS3 version. Yeah, I know, consoles suck, whatever ;P.
The game is a worthy successor to OFP, it gets the same sense of scale (only bigger) as the original, the same sense that you are only a small part of a much bigger war. The graphics, even on the PS3, look pretty sweet so I imagine on a decent PC they would be amazing. Terrain, vehicles, people and world objects are all beautifully modeled. Missions are fun and varied.
The game can be bloody frustrating. It has no quicksave function, and yes, I do consider that a weakness. For the 10% boost in "realism" that checkpoint saves give (making you more afraid of death) they add 95% to the irritation factor, especially in a game where someone from 400 yards away can kill you with one shot. I play games for fun, not for realism, and would have appreciated the ability to quicksave. The hardcore realism guys could then ignore that function if they so wish.
One other irritant - controls are not very well explained in the tutorial, they tell you how to do something once but there are no further reminders, which can be irritating.
One final warning for the heathens like me who are going to play this on a console, forget it unless you have a big HD screen, because you cannot even get past the first mission in standard definition TV - you simply cannot see the enemy at any sort of distance, and this game requires you to be able to.
The big picture:
I'm only a few missions in, and it's really good fun and frustrating at the same time, but the fun does win out. Just like the original then.