On June 11, 2012, Apple released a developer preview of Safari six. with a function known as iCloud Tabs, which syncings with open tabs on any iOS or other OS X unit that ran the most recent computer software. Safari 6. was earlier referred to as Safari 5.2 right up until Apple transformed in WWDC 2012. The stable launch of Safari 6 coincided with the release of OS X Mountain Lion on July 25, 2012, and was built-in inside OS.