ePub file handling
It's neat that I don't need iTunes to put ePub files in my iOS devices now, thanks to onedrive. However, I would like to be able to send multiple books to iBooks. Maybe give that a shot.
Ahmed X commented
EPUB, AZW3, and all the different formats that calibre can handle... please allow us to at least read them that way we do not need to convert our books to PDF first.