The list of files, are one's that should be there. There are 3 sections. New, Changed, and Removed.
New Files: These are ones that didn't exist in the previous version and need to be uploaded.
Changed Files: These are files that did exist in the previous version but have been altered in the new version so need to be replaced.
Removed Files: These are files that are no longer needed in the new version and need to be removed.