Microsoft has officially confirmed that Windows 8 has been released to manufacturing and the final build number is 9200. you can get Windows 8 starting on October 26th either by upgrading for $39.99 or on a new PC.
August 15th: Developers will be able to download the final version of Windows 8 via your MSDN subscriptions.
August 15th: IT professionals testing Windows 8 in organizations will be able to access the final version of Windows 8 through your TechNet subscriptions.
August 16th: Customers with existing Microsoft Software Assurance for Windows will be able to download Windows 8 Enterprise edition through the Volume License Service Center (VLSC), allowing you to test, pilot and begin adopting Windows 8 Enterprise within your organization.
August 16th: Microsoft Partner Network members will have access to Windows 8.
August 20th: Microsoft Action Pack Providers (MAPS) receive access to Windows 8.
September 1st: Volume License customers without Software Assurance will be able to purchase Windows 8 through Microsoft Volume License Resellers.