While you're waiting for OS X Mountain Lion to download, don't forget to update your other Mac apps, including Safari, Aperture, iPhoto, and iMovie.
The Safari update is more substantial, while the other programs are getting a handful of new features and fixes.
Note that, for now at least, Safari 6 is only available on Macs running the new Mountain Lion operating system update. There is currently no upgrade path if you're using Windows or a previous version of OS X. The product page on Apple's Web site says, "The latest version of Safari is … Read more