In a remarkable switch from the past, Apple has lifted a veil of secrecy and has given technology journalists a preview of the next operating system for the Macintosh even before making it available to developers. The tech news today is buzzing about this new version. And for good reason: it continues to make the Mac more like an iPhone or iPad, and increasingly integrates iCloud. What this tells me is that Apple is committed to simplicity, to making computers easier to use.