If you use SCCM and Intune, you probably are in co-managed state for your devices – also called tenant attached devices.
In this configuration, you are also probably aware that you can get details from the SCCM client of the device (see https://t.co/mp0I0MntlM).
Well, a new capability has been added for these details: Software updates
This new capability allows you to see if the co-managed devices is up to date or is missing some updates.
To have a look at it, connect to your Intune portal (https://endpoint.microsoft.com/) and access the Devices\Windows\Windows Devices blade to select one of the co-managed device.
Then you can access the Software updates blade to see which updates are installed and/or missing