This Beta Version of the Web Library is a real improvement. However, the only way I found to edit an item online (and for instance add an attachment), is to switch back to the old version. Will that be added?
can I search and add metadata to a pdf I added as a standalone item?
The other thing to note is that with the old web library interface it is possible to get some very basic information about the attachments via a link, but this is not available in the new interface.