The new Mac OS X Lion preview | all days updating

We’re taking our best thinking from iPad and bringing it all to the Mac with Mac OS X Lion, available in summer 2011. Here’s a preview of some of the top features.
the official Apple website preview is here http://www.apple.com/macosx/lion/

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here are all Updates of this new OS X Lion in En & Ar | all days updating


Launchpad

Apple's making a big deal out of Launchpad, Lion's new iOS-style app launcher, but we're assuming most power users will stick to the Finder, Dock, and Spotlight for quick access to frequently-used apps. We're guessing less-advanced users will love it, though -- it mimics the successful iOS app interface to a tee, including folder support and direct app installs from the Mac App Store.

Swipes and scrolling

Three-finger swipes are everywhere in Lion -- a swipe to the left to switch between Spaces and full-screen apps, a swipe down to show app windows, a swipe up to show Mission Control, a swipe right to show the Dashboard space. You can also pinch in with four-fingers (really, three fingers and your thumb) to bring up Launchpad, and pinch out to show the desktop. All of these can be customized, of course, but it's definitely notable that Apple's enabling multitouch trackpad gestures as a default navigational tool.
Two-finger gestures have been slightly changed as well -- horizontal swipes now control back / forward in Safari by default, and scrolling is now inverted by default, as in iOS. (You can switch it back to regular, thankfully.) There's also a new preference that basically rids the system of scroll bars if you're using a trackpad, instead showing an iOS style vanishing scroll indicator.


Versions and Auto Save

You might think of Versions and Auto Save as Time Machine for apps -- Lion apps automatically save changes to documents as you work, and then you can browse between saved versions using a variation of the Time Machine interface. It's nifty stuff that worked really well when we tested it in TextEdit, although we'll see how well it performs with heavyweight media files.


Internet accounts

Just like iOS, you can set up accounts for MobileMe, Gmail, Exchange, Yahoo, and AOL all from a central preference pane -- the settings are used in Mail, iCal, iChat, Address Book, and other apps.
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sourse: http://www.engadget.com/2011/02/28/mac-os-x-lion-hands-on-preview/
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