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I think you're confused because there really has only been one unibody 17" MBP. Therefore "newly released" doesn't really refer to the spec update from WWDC rather the change from the older style to the unibody style chassis.

The case appears to be designed for the previous generation MBP (i.e. the Aluminum one) and hence their statement about the "newly released" MBP refers to the unibody design which is physically different in size to the old AlBooks thus making the case incompatible.

At least that's how I interpret the wording.

Ruahrc
 
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