Apple has included a more subtle, yet very important, change in OS X Mountain Lion that points to the company’s focus moving forward. If you open the “About This Mac” window in the Mountain Lion developer preview, you’ll notice that “Mac” has been dropped for a simpler “OS X.” The prefix has also been dropped from promotional materials on Apple.com and the Mac App Store.
Why the change to just “OS X Mountain Lion?” Apple is continuing to blur the line between hardware and software. It’s about the unification of iOS and the desktop experience.