Windows 8 to Debut in October 2012

Microsoft will start selling Windows 8, the next major Windows OS software and installed on laptops around in October, 2012 whereas the work around to finalize the product will get finish in summer.
Microsoft has plan to launch Windows 8 on ARM based computers accompanied with Intel machines, as before the Windows 7 OS only runs over Intel integrated chips systems.

It means Windows 8 would be a versatile upcoming operating system as compare to its predecessors.

Via