(CBS) - Apple announced the next update for the Macintosh operating system Thursday. Mountain Lion is the ninth update for Apple's popular OS X - the most recent version is Lion.
This update will better incorporate Apple's mobile operating system iOS. Mountain Lion will introduce a more integrated desktop version of iOS features. The update includes iCloud, Reminder, Notes, Notification, Game Center and Face Time.
The new OS X also includes deeper integration with Twitter. But, Facebook won't get the same treatment. The social network was also snubbed for Twitter when Apple announced the iPhone 4S.
Macs will also get an added layer of protection with Gatekeeper - a security feature that will give you more control over what you download. For instance, you can choose to only download software from Apple-approved developers.
Some items will be left out. For instance, iChat will be dropped for Message - which will resemble the mobile messaging app.
Today's update is a preview for Mac developers only. Everyone else will be able to buy the software in late summer of 2012.