Important update for WSUS 4.0 – KB 3095113
Microsoft has released Windows 10 with a feature upgrade (version 1511) which is the first in-place upgrade for Windows 10.
To enable this deployment to Windows 10 clients, Microsoft will ship a patch to WSUS for WS12 and WS12R2 (KB 3095113) which enable WSUS to deploy this feature upgrade.
The Windows 10 1511 feature upgrade is available via WSUS (which will show up with a new Upgrades classification), and it will apply to Windows 10 RTM as well as Windows 7 and Windows 8.1 machines.
The hot fix for WSUS is available to download from this link.