Quoted from Toms Hardware, October 26, 2011, according to the roadmap Windows 8 Release Candidate (RC) will appear in the arena of MIX 2012. The next series, namely Windows 8 RTM build will be launched in June of that year.
If nothing gets in the way, the presence of Windows 8 in August will also be accompanied by an online market, Windows Phone 8 and Xbox App Store.
From the Windows 9, the developer preview version of the operating system it will appear at the event in 2013 and the beta BUILD present at CES 2014. Release Candidate version is present at MIX 2014 and was followed by the RTM version that comes with Internet Explorer 12 in the event BUILD 2014.
Apparently, Microsoft is currently developing Windows Mobile and OS 9 that will be present along with the desktop version in November 2014.
However, pelunmcuran operating system and Microsoft's current products are not yet certain because many things can change and Microsoft itself has not been willing to provide official confirmation of their products are related has not been announced.