Steven Sinofsky, president of Microsoft’s Windows Division, took the stage for the first day of the Windows Developer Days conference in Japan to announce the Release Preview of Windows 8 will launch during the first week of June. The news confirms previous speculation that the Windows 8 release candidate would be called a "Release Preview." Microsoft’s Building Windows 8 Twitter account confirmed the news via tweet, providing the announcement photograph seen above and the following statement:
Announce…Windows 8 Release Preview first week of June. Here’s the announce from Japan’s Windows 8 Dev Days #thankyou
Link – http://www.neowin.net/news/windows-8-release-preview-coming-first-week-of-june