If the rumors pan out, Apple’s next MacBook Pro line will set the notebook world ablaze with a thinner chassis, USB 3.0 and a 15-inch high-resolution, so-called retina display. Of course it would pack the latest Intel silicon with rumors and logic pointing to an Ivy Bridge chipset. Sounding a different from the long-rumored 15-inch MacBook Air, this model, if it really exists, seems appropriately equipped with impressive hardware to retain the Pro designation and lead Apple’s charge against the onslaught of so-called Ultrabooks.