Why it is unlikely that most enterprises are updating to Windows 8.1 Update, the update is now available for volume license customers. Microsoft has released the following:
- Windows 8.1 with Windows 8.1 Update integrated
- Windows Server 2012 R2 with Windows Server 2012 R2 Update integrated
- Windows Embedded 8.1 Industry with Windows Embedded 8.1 Industry Update
This is the final part of the release cycle that included the release via MSDN on the 2nd and Windows Update on the 8th. Additional updates can be found through Windows Update and WSUS.
A separate issue was found that impacted customers utilizing WSUS configured in the very specific, non-default way. If affected, the devices will not receive future updates released by Microsoft. Customers should read KB2959977 for remediation guidance.
Source: Springboard Series Blog