The show must go on, and Apple continues its gradual progression of its operating system, by introducing OS X: Mountain Lion. There will be no re-invention of the wheel this time; just a bunch of upgrades that should spice things on your Apple devices just a bit. The biggest changes pretty much are port overs from the iPhone/iPad/ iPod advancements. This will include “Messages”, “Notification Center”, Twitter integration, and “Game Center”. Go over to Engadget for an in depth eleven minute video preview.