Before any thing released for General Public, it always leaked by some one on the internet. This is what the past experience shows with every thing. whether the release is by Apple,RIM,Nokia, Microsoft and etc. Every single product specs,pictures and much more has been leaked on the internet.
Like always, now Windows 8 the upcoming windows screenshots of the whole installation process were released by a Russian website called WinReview. The images show the Upgrading from windows 7 to windows 8.
Below is the whole gallery of the images leaked of Windows 8.
he images are courtesy of the Russian news siteWinreview. The latest available build of Windows 8 appears to be 6.2.7971.winmain.110324-1900. Another interesting tidbit is that Windows 8 is available via Microsoft Connect for private testing.