After giving a demonstration for some of the new features in Mountain Lion today, Apple confirmed during its Worldwide Developers Conference keynote that Mountain Lion would ship in July for just $19.99. That price is good for Lion and Snow Leopard users who want to upgrade all their personal Macs. Apple also noted it would be free for all developers attending WWDC. Apple will ship a developer preview today.
$19.99 June 11, 2012