Thanks, Xenophane. This is coming in a future build. In the meantime you can use the WSUS_ConsoleAppQueryTool.exe, which is packaged in the batchpatch.zip file that we publish on our website at the BatchPatch Download Page, to retrieve this information for all computers.
The WSUS_ConsoleAppQueryTool allows you to query your WSUS server directly to find out which machines are pending reboot, which machines have downloaded updates waiting to be installed, and which machines haven’t checked-in with your WSUS server in X days.
-Doug