Before I have posted that Windows 8.1 update version of Windows 8 has been leaked for download over the Interne, which confirms that Microsoft is working on the upgrade version of the windows 8.
Windows CFO Tami Reller have yesterday confirmed that new version of the Windows 8 will be called as Windows 8.1 and she also gives details of its releasing date.
The new version of Windows 8 will be release on June 26, and users can download it from Microsoft windows store.
More info about on upgrade version has not been made, but there must be new customization options on start screen.
Microsoft have also says that they are working to get back the start button on the windows, hence there may be the chance to give start button this version.
All the details will be disclosed after its release, so till then we have to wait, what Microsoft will brings new in this.