Apple’s MacBook line had been getting a little gray around the edges, and the company’s refresh Tuesday introduced a lot more than a new silver aluminum sheen with glossy black highlights. In an oxymoronic way, though, everything is different about the new MacBooks, and yet they remain remarkably similar to previous generations. Let me explain. I could start with the new design, but that’s not the most important new change. What’s bigger is the introduction of a new processor and graphics architecture.
