I have been waiting for months now to replace my 2008 iMac with a new Ivy Bridge model because I don't want to pay 2012 money for 2011 tech. I have been following all the news/rumors on the web & all signs are pointing to a late September early October release. Rumored to include faster Ivy Bridge processors, USB 3 & a new anti-glare screen. Also rumored to be dumping the super drive to make it thinner.
This is agony waiting for Apple to officially announce it.
