Microsoft has allegedly completed the Release Preview (release candidate) of Windows 8, with the build number 8400, well ahead of the OS's launch, scheduled for the first week of June.



From Neowin:

The post on the Winunleaked.tk forums (free registration required) supposedly has an image of the Start screen from the 8400 Release Preview build of Windows 8. The post also claims that the SKUs that will be launched for the Release Preview include Windows 8 (Core), Windows 8 Release Preview (Pro), Windows 8 Release Preview with Media Center (ProWMC) and Windows 8 Enterprise (VL).

Microsoft has already announced that the Windows 8 Release Preview will be launched sometime in the first week of June. The company has yet to give a specific launch date. Two big tech oriented trade shows are happening that particular week; Computex in Taipei and E3 in Los Angeles. Microsoft could announce the official launch of the Release Preview at either one or both events.

  Windows 8 Release Preview reportedly ready, build 8400