Use This Link to Get Your Free Copy of Mountain Lion If You Are Eligible
Mountain Lion will be made available for the public later this month. If you have purchased a qualifying Mac from an Apple Store or an Authorized Apple Reseller on or after June 11th, 2012, you will be eligible for a free upgrade of your system to OSX Mountain Lion while others will have to go to the Mac App Store and purchase it for $20.
This is the message from Apple –
The OS X Mountain Lion Up-to-Date upgrade will be available at no additional charge from the Mac App Store to all customers who purchase a qualifying new Mac system from Apple or an Apple Authorized Reseller on or after June 11, 2012.
Customers who purchase a qualifying Mac between June 11, 2012 and the date when Mountain Lion is available in the Mac App Store will have 30 days from the date Mountain Lion becomes available to make their Up-To-Date request.
Customers who purchase a qualifying Mac after Mountain Lion becomes available in the Mac App Store will have 30 days from the date they purchase their Mac to make their Up-To-Date request.
When Mountain Lion becomes available in July, come back to this page to request your copy of Mountain Lion.