An update is available for Windows 8.1 Preview. This update includes fixes for adaptive streaming and Digital Rights Management (DRM) playback features in Windows 8.1 Preview.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
Article ID: 2875636 - Last Review: Aug 13, 2013 - Revision: 1
Windows 8.1 Preview