Safari 6. was previously referred to as Safari 5.2 right until Apple adjusted the variation range at WWDC 2012. The secure release of Safari 6 coincided with the launch of OS X Mountain Lion on July 25, 2012, and was built-in inside OS. Oldenburg, Ann (March 23, 2012). "Pam Anderson launches race car or truck workforce Fergie: no 'X Factor'".