they officially announced in game clan ladders and clan support, leaderboards, rank up system, an in game monetary system to unlock weapons and gear. There are also classes in the game at which in later ranks you can combine to make things such as medic/sniper. and so on. I heard the beta was great with little to none connectivity issues, the only issues i heard was that it was "too realistic", shotgun too powerfull with too much range and i think those were the ones people bitched the most about.
http://www.gametrailers.com/player/43370.html
http://www.gametrailers.com/player/43376.html
SINGLE PLAYER http://www.gametrailers.com/player/43374.html