MacNN reports today that the long-anticipated refresh of the iMac line -- including the new NVIDIA graphics subsystems -- may be just around the corner. Supplies of the existing models are said to be lean in the channel and education sales team members are supposedly extending high discounts to customers in order to clear out the existing inventory.
While things have been Perry Mason tense between Intel and NVIDIA (worse today, if you caught Engadget's story) it would seem from the MacNN tipster that the legal dispute over integration with Intel's new processors won't prevent new iMacs from hitting the street. That's a relief, if true; I've heard from multiple people in the past week or two who really want to buy a new iMac but are holding out for the model refresh.
AppleiMac 27-inch with Retina 5K display (late 2014)