Apple Mountain Lion was announced by Craig Federighi, Apple's vice president of Mac Software Engineering, when he took the stage shortly before 11 a.m. PDT at the 2012 Worldwide Developers Conference.
Succeeding Lion, Apple's best selling release, the aptly named OS X Mountain Lion offers over 200 features at a $19.99 upgrade cost -- $10 less than the last upgrade.
Since Federighi did not have enough time to debut Mountain Lion in its entirety, he kept the presentation short with eight key features from the Messages app to the Game Center. Apple's iCloud service auto-syncs all data from programs such as Pages and Numbers with the corresponding apps on mobile devices, and vice versa. The quick sync software even saves Safari content, such as browser tabs, bookmarks and history to the cloud, which can be accessed from any device.
Users can purchase Apple's Mountain Lion from the Mac App store starting in July. While new Macs will have Mountain Lion pre-installed, Mac users all the way back to Snow Leopard can download the latest Apple software for a low fee.
Check out the first gallery to see the roundup of the OS X Mountain Lion features.
Want to see what Mac users think of the new OS X features? Check out the gallery below for some Twitter reactions.