I'm not sure if this matters or not, but the submitted title calls it "Mac OS X 10.8 Mountain Lion", and 10.8 is indeed the version number I would expect; yet this number is nowhere to be found, neither on Apple's page nor in Gruber's announcement. Instead, it's just called "OS X Mountain Lion" everywhere. I wonder if they dropped the version number, or are downplaying it? But for what reason?