OS X Lion Could Be Killed Off Early As Apple Prepares Staff For Mountain Lion [Rumor]

You won't be able to purchase Mountain Lion if your Mac can't handle it.
Could OS X Mountain Lion make its debut at this year's WWDC?

Apple could be preparing to kill off OS X Lion early in favor of its predecessor, Mountain Lion, according to the company’s AppleCare training schedule. One source claims that the Cupertino company is already recruiting and training staff for the new release, which could get its debut in June, weeks earlier than expected.