There’s no going back to a standard-resolution display after using the new iPad, the iPhone 4 and 4S, or any one of a number of Android phones with qHD or better resolution, and Apple may be preparing to create a similar experience with its notebook computers. Apple’s next-generation MacBook line of laptops could feature high-definition Retina displays according to a recent report from Ars Technica. MacBooks with high-resolution Retina displays could launch as soon as this summer according to the site’s sources, one of which found double-sized graphics in the most recent preview of OS X 10.8 Mountain Lion. “I would interpret it to mean that Retina [MacBook] is close; perhaps concurrent with the release of OS X 10.8,” the unnamed source said. Apple is expected to launch an updated line of laptop computers this summer, including thinner 13-inch and 15-inch MacBook Pros.