After the first Preview,Now Apple Launched a Mac OS X Lion . Its build number build 11A419. Each version also included modifications to the general interface, such as the brushed metal appearance added in version 10.3
The non-pinstriped titlebar appearance in version 10.4, and in 10.5 the removal of the previous brushed metal styles in favor of the “Unified” gradient window style.
“golden master candidate” build it discussed over the weekend, although the designation remains an internal one for the time being with Apple not expected to push out a final release candidate until around its Worldwide Developer Conference in early June.
Mac OS X 10.7 Lion is scheduled to debut this summer at Apple’s Worldwide Developers Conference 2011.