Following a report from earlier this week that claims that Apple is gearing up to launch a new Mac Pro in late July or early August, a reliable source tells 9to5Mac that Apple has referenced a mid-2011 Mac Pro in multiple internal documents. This, of course, is reference to an unreleased Mac Pro. Apple has not upgraded their professional desktop Mac since July 2010. Additionally, these internal documents are said to tout four new core Mac Pro models: 6 cores, 8 cores, 12 cores, and for the first time, 16 cores. This is likely in addition to some custom configurations.

If these internal documents jibe with what Apple will be soon releasing, Mac customers will be able to get their hands on a super-fast 16-core Mac. In addition to these specifications, we hear that Apple has already begun the process of assembling product manuals for the new Mac Pro, corroborating previous claims of a late July or early August launch. Our sources could not confirm if the new rack mountable design, which we detailed, will make its way into the 2011 model.

On a final note, a certain Apple executive has reportedly said the following in an email we’ve seen:

“Apple is investing heavily into Mac Pro”

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