yeah it is the June 2012 model iMac 27". I have to say i love it but I have had just a little taste of the 1440p in game and now i have to get a rig that can really play on it.
Also I would not advise anybody to buy the new generation iMac. Sure it will have a 680mx but allegedly not having a disk drive in it I don't know how you could partition the hard drive to run windows. And i haven't found anything on the mac that is really graphically intensive unless you are rendering.