Apple is preparing to release new "Mid 2011" Mac Pro models, according to 9 to 5 Mac who cites internal Apple documents reportedly mentioning options ranging from six to sixteen processor cores. According to the source, Apple has begun putting together product manuals for the new Mac Pros, which are said to begin shipping in late July or early August. The late July/early August timeframe for the new Mac Pro release was first reported over the weekend by CNET's Brian Tong, whose sources had previously accurately pinpointed the latest iMac release within a small window six weeks ahead of time. The primary question surrounding a Mac Pro release within the rumored timeframe is just which processors Apple will be using. A 16-core configuration would almost certainly come as a pair of 8-core processors, and 8-core Sandy Bridge processors of the server class used in the Mac Pro line aren't scheduled to appear until the fourth quarter of this year as Intel's Xeon E5 line. While Apple has been known to receive early access to Intel processors in the past, it seems ambitious to suppose that Apple would have that much advance access to be able to ship new Mac Pros by early August given Intel's production plans. One intriguing report from M.I.C gadget surfacing last weekend claimed that Apple will be using a "unique CPU" in the new Mac Pros. Intel has in the past provided custom processors for Apple, pushing out a specially-designed mobile chip for the original MacBook Air back in 2008. M.I.C gadget does not, however, have a track record for Apple hardware records, so the reliability of the claim is unknown. Article Link: New Mac Pros With Up to 16 Cores Coming in Late July/Early August?