Microsoft has announced that the Windows 8.1 release date for manufacturers will be in August, and the company’s OEM manufacturing partners will get their hands on Windows 8.1 RTM in late August.
She announced that Windows 8.1 RTM will be available for OEM partners in late August. This means OEMs will be able to get the RTM bits and begin preparing devices with Windows 8.1 just in time for the holidays! We’ll have more details to share in the coming months for consumers and other customers on how to get Windows 8.1. As you have heard, Windows 8.1 is an update that refines the vision of Windows 8. Two weeks ago, we announced the Windows 8.1 Preview for people to try out– if you have not already, check it out and experience the new features and improvements first-hand.
Microsoft did not give any further details on the Windows 8.1 release date for the rest of us, they have said that they will provide more details in the future.
Source Microsoft