Finally We have official words on General Availability of Windows 8. At WPC 2012, Microsoft’s Tami Reller has announced that the Windows 8 will be RTM’d by first week of August; and will hit the market in 109 languages across 231 markets worldwide in October.
She also confirmed that enterprises with Software Assurance, will have full access to Windows 8 RTM bits as early as August. This means that MSDN & TechNet subscribers and Connect users may also have early access to Windows 8 RTM.
Source: WPC 2012 (now on-air)