I was just checking Mountain Lion Features, especifically on the 200 new features and at the bottom of the page on 3 it says. 3. Supported on the following Mac models: iMac (Mid 2011 or newer), Mac mini (Mid 2011 or newer), MacBook Air (Mid 2011 or newer), and MacBook Pro (Early 2011 or newer). it's for Quicktime X new high performance H.264 encoding, but my point is that there isn't new model of the iMac so I think it's clear that ML will support a new iMac and it probably be when ML arrives, so Yes I think the 2012 iMac is coming when the ML release date gets closer. I hope am not reading to much into lines... what do you think?