As a future PC to iMac convert this coming summer, I was EXTREMELY disturbed by the OWC: Apple Further Restricts Upgrade Options on New iMacs report. So I called Apple Sales to further investigate. And I was assured that the story was true but only to a certain point. yes, these are new hard drives which are not currently available from third parties for custom upgrades or replacements. HOWEVER these new hard drives are new to the market they were designed to help with the heat issue in older iMacs. And yes, these types of hard drives are not available to third party vendors at the moment. BUT this is because it is a new design. AND the new hard drives will become available to third party vendors for upgrades and replacements by year end. It is just a case of Apple being one step forward everyone else. And the marketplace has to play catch up the same as the Thunderbolt issue. But again by years end along with Thunderbolt compatible devices these new drives will become available to vendors such as OWC by year end.