Here are the Best Practices for upgrading to the latest Windows Feature update.

Here is a guide from Symantec on how to utilize Software Management Solution to perform upgrade -  KB 178784

Here is a guide how to perform OS Feature Upgrade via Patch Management Solution - KB 184951

If your systems have encryption enabled on them, please review this guide, describing proper steps for the upgrade - KB 179017

Also, please review the following guide to know what to do, in case if your upgrade runs into problems - KB 163060
 

1. Following SQL Query can be used to list computers with OS details, including the OS Service Channel.

SELECT
  [Resource name] = isnull( os.[Name], item.[Name]),  
  os.[Domain],  
  os.[OS Version],
  CASE
   WHEN os.[OS System Mask] IS NULL THEN os.[OS Name]  
   ELSE dbo.fnSysMask_GetOSNumberNameEx(os.[OS System Mask])  
  END AS 'OS Name'
 from vRM_Network_Resource r   
  JOIN [vRM_Network_Resource_Item] item on item.[Guid] = r.[Guid]  
  LEFT OUTER JOIN Inv_AeX_AC_Identification os on os.[_ResourceGuid] = r.[Guid]   
  LEFT OUTER JOIN [Inv_AeX_AC_Location] lo on lo.[_ResourceGuid] = r.[Guid]  
    GROUP BY os.[OS System Mask], [OS Name],[OS Version],os.[Name], item.[Name] ,[Domain]

Example results:

2. Attached are documents with details on how to create a report showing the OS Build Number.