Some internal configuration files that reveal a list of Macs that support flash drive or USB booting in Mountain Lion may have inadvertently tipped Apple's hand on future iMac and Mac Pro configurations. A report by AppleInsider also indicates that the as-yet-unannounced models could be the first desktops in nearly 20 years that don't include a built-in optical drive, a long-desired Apple engineering goal. The configuration files with the new model numbers are seen inside Boot Camp Assistant.
