I have been eagerly awaiting the arrival of a new iMac but often find myself rather confused what everyone is waiting for. It seems that most looking for a new iMac are already on a newish iMac and I am curious (from a non techie standpoint) what the hype is all about. I am currently on a 2006 20 inch with 2.16 GHz and 4 Gig RAM. I haven't upgraded the OS as I don't see the point with the machine I have now. Heck I was on a 2004 G5 until 2006 when applecare replaced my computer so I still see it as the "new one". I am STOKED there is a new iMac coming out as I have found the limitations of this mac (it won't play most of the high def video I am shooting now) and see the window closing to when this generation is supported, but not sure what those with a 2010 etc will particularly gain with a new mac. Is it a new form factor? Is it a new thinner profile? Is it a retina display (this has been done to death) Is it something else.......? If yes, fill me in on the something else. I use my mac daily as I run a small business from my home and am finding all my accessories starting to drop off connectivity etc. I get the beachball ALL the time etc, but apart from a faster machine, what will my $4k get me?