As promised yesterday by the company's chief financial officer, Mac OS X 10.7, also  known  as  Lion,  

was released to the Mac App Store early Wednesday.Snow Leopard users can upgrade to the newest

release for $29.99.

OS X Lion integrated with more than +250 new features.some of the features listed by apple

are :

Accessibility

Address Book

AirDrop

AppleScript

Auto Save

Automator

Electronic Distribution

FaceTime

FileVault 2

Finder

Full-Screen Apps

iCal

iChat

Launchpad

Lion Recovery

Mac App Store

Mail

Mission Control

Multi-Touch Gestures

Networking

Photo Booth

Preview

Privacy

QuickTime Player

Resume

Safari

Screen Sharing

Security

Spotlight

System

System Preferences

Text

TextEdit

Time Machine

UNIX

Versions

Xsan