So finally the WWDC is happening at Moscone Center, during the keynote on WWDC, Phil Schiller has just announced about the availability of the next generation Mac OS X Lion, he said Lion will be only available through the Mac App Store as a download of 4 GB, means no DVD’s of Mac OS X Lion.

He also said that with 3000 new APIs and 250 amazing new features Mac OS X Lion will be make itself to the release in July and will available for download in the Mac App Store for $29.