Apple has released a developer preview of its Mac OS X 10.8 operating system, nicknamed Mountain Lion, which brings popular apps and features from the iPad to the Mac and will accelerate the pace of OS X innovation.

Mountain Lion is the first OS X release built with iCloud in mind for easy setup and integration with apps, the company revealed Thursday while announcing the upgrade.

Talking about the latest Mac OS, Michael Gartenberg of research firm Gartner said this OS would bring a lot of features to the Mac that iPhone and iPad user on a daily basis.

Apple, the Cupertino-based company, says Mountain Lion has 100 new features such as Messages, Notes, Reminders and Game Center to the Mac, as well as Notification Center, Share Sheets, Twitter integration and AirPlay Mirroring and this time the company has addressed even the tiny details in the Safari Web browser to wholesale changes in how instant messaging works.

However, Apple's not merging Mac OS X and iOS, said Michael Gartenberg. But they are making them feel the same. And that shows that the ecosystem is more important than the device or even the platform.

Of all exciting features of iPad that are now to be found in the Mac's operating system, iCloud is perhaps the most wanted one.

Mountain Lion and iCloud

In a statement, Apple called Mountain Lion the first OS X release built with iCloud in mind.

With the launch of Mountain Lion in the summer, the Mac users can expect even more iCloud integration on the Mac.

Apple last year introduced the free iCloud service along with iOS 5. That version of iCloud, however, was never really ready for consumers for transition of on-device data to the cloud.

Cloud rollout glitches and potential privacy issues also put the customers aback from using the iCloud feature. But even after admitting all the issues related to iCloud, earlier this week Apple CEO Tim Cook said that the iCloud had collected 100 million users since its launch.

Apple's iCloud technology used to sync media (music, photos) and some data among iPhones, iPads, iPod Touches and to a limited extent Macs.

The latest Mac OS, however, focuses heavily on iCloud and integration with other iDevices. With the launch of OS X Mountain Lion, iCloud will initiate syncing calendars, contacts and email across all iDevices. So, now when the user adds, deletes, or edits something on Mac, the change will automatically occur in iPad, iPhone, and iPod touch and vice versa.

Experts believe that now Apple will also abandon its iChat and replace it with iMessage. Users can send an iMessage to any iPhone, iPad, or iPod touch running iOS 5 or any Mac running Mountain Lion and that message will be pushed to all iDevices.

With iCloud on the Mac, Apple's vision of a unified experience across all devices appears achievable now.

Check out the video preview of Apple's Mountain Lion OS -