My first impressions can be summed up in one word : "Wow". fps mode is much more smooth then in UC or BCM and does feel to a sort like an actual fps.
i'll just divide my impression into the usual review:
Graphics- imo the reviews and general populace don't do the game justice , i find the graphics to be top-notch. sure you don't have all the fancy shadows or what not but it serves it's purposes and is generally appeasing for the game of this genre. btw is it me or did resnig get a haircut since bc3k?
Sound - not that far off from the older titles , loved the new music though.
Gameplay - not that much new but having consistancy in the series can be a good thing. as i've mention before , loved the new ground unit handling.
i still get an occasional crash while messing around with the oddball ground unit (ie mobile forward base) but the game's far more stable then previous titles.
overall : 9/10 (would have been a 10/10 if i'd seen some new assets or at least old ones coming back , ie the mechs in bc3k even )