Apple has posted a 60-second promotional video which is a standard runtime for a TV ad, but we have no confirmation of it running on broadcast or cable TV networks.
The video has, however, been shown during the WWDC keynote address and subsequently posted to <a href="http://www.apple.com/osx/preview/video/index.html#video-preview" target="_new"Apple's website and to Apple’s YouTube channel.
Apple’s video description reads: We reconsidered every element of the Mac interface, large and small. The result is something that feels fresh, but still inherently familiar. Completely new, yet completely Mac.
Direct link to video here.\