Thank you for using the Windows 8.1 Preview. Partners should communicate with their customers to make sure they move to the final released versions of Windows 8.1 and Windows RT 8.1 before January 2014 when the license for the preview will expire.
Windows 8.1 Preview License Expires Jan 2014 - Welcome to the US SMB&D TS2 Team Blog - Site Home - TechNet Blogs

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