|Mac OS X 10.0 Beta disc via ComputerWorld|
"First and foremost, keep in mind that this isn't the official release of the software; Apple is still testing and tweaking Yosemite. That means it may not function as expected. Some features may be completely absent or could differ from what Apple showed off during its WWDC keynote in June -- and some features may look very different in the final release."Head over to ComputerWorld to read the full article.