Looking at http://www.w3.org/TR/2009/WD-FileAPI-20091117/#dfn-file
There doesn't appear to be anyway of retrieving creation date, modification date or size of the file. Could I suggest adding attributes creationDate, modificationDate and size to provide this information?
For a use case; we're working an a student coursework submission system, where they'll be able to drag and drop files. It would be useful to show the student details of the file they're uploading (for example, modification date is useful to confirm they're uploading the most recent version). We do actually see a fairly large number of mis-uploads with the existing upload system, and are hoping exposing more information during the upload (rather than once the file is received) will help.
