Since the epic rise of the MacBook Air, the MacBook Pro has become something of a dark horse in the Apple notebook family. Sure, it may not be Cupertino's thinnest, sexiest product, but it has the heavy-duty internals to handle intense graphics for artists and gamers alike. Apple just announced its updated 13- and 15-inch MacBook Pros -- not to mention a new 15-inch model with a brilliant Retina display, and these new machines boast some pretty impressive upgrades. There's no shortage of spec changes to keep track of, so check out our comparison ch
