Apple has released the second beta of Mac OS 10.6.5 for developers. The version will reportedly be called 10.6 when it will be ready to be available for everyone. California based Apple has updated the Operating System with new features to make it more complete OS.  According to MacRumors.com, Apple has updated iCal, 3D Graphics, Mail, Quick Time, Time Machine and USB Devices.

Apple had reportedly seeded last build of Mac OS X 10.6.5 on September 14. The new build (Build 10H548) comes two weeks after last version (Build 10H542) was released.

The release date of Mac OS X 10.6 is not known. It is about 15 months since last major version of Mac OS X was released by Apple.