Driver update - Extra cover type
Calibre 1.15 has one update to the driver. This is to add an extra cover image type when sending covers with books. This is the "AndroidBookLoadTablet_Aspect" version and is used on the details page.
If you want to get this version of the cover onto the device without resending the books, I suggest you use my utilities plugin. Its cover upload will can replace the covers of any book in your library.