iFixit has performed more of its traditional high-quality teardowns on both the new 13-inch Retina MacBook Pro and new 15-inch Retina MacBook Pro, revealing various improvements to the components of both that enhance performance, but also unsurprisingly make both harder to manually repair. One of the more interesting changes relative to the new 13-inch model is that Apple has apparently reversed its decision to move the 13-inch model's battery away from the trackpad as seen in the