Apple has just done its work quickly and just released an update of Mac OS X Lion Developers Preview 4 for developers, the update is come to fix the some bugs which sort out by developers and will fix all of the most and main bugs which developers faced while using it. The new update is slightly comes with less weigh than full Mac OS X Lion updates and it weigh 656 mb for MacBook Air or others.

 

The update of Mac OS X Lion Developers Preview 4 is available under the Mac Developers account, and the Mac Software update application for download.