Mac OS X Lion is now available on the Mac App Store for $29 as an upgrade to Mac OS X v10.6 Snow Leopard.
Lion will be the easiest OS X upgrade ever. At around 4GB, it's about the size of an HD movie downloaded from the iTunes Store.
Customers who do not have broadband access at home, work, or school can download Lion at an Apple Retail Store. In August, Lion will be available on a USB thumb drive through the Apple Online Store for $69 (U.S.).
Mac OS X Lion Server requires Lion and is available from the Mac App Store for $49.
OS X Lion also includes a new feature that lets customers restore system software to a Mac with just a few clicks—without using install discs or drives.
Additional information on the new Mac OS X Lion may be found on the Apple website.