Last week, a report from french site MacBidouille claimed that Apple may not be shipping their new iMac until early 2013, despite Apple's official promises that the new iMac models would ship before year's end.
Apple continues to list November and December availability dates for the new iMacs in their online store. Pre-orders are not yet available but are expected by the end of November.
Article Link: New iMacs Still Expected to Ship in November-December