Hello! I'm a long-time ePub user and have heard that using kePubs will allow the book's cover image to be displayed full-screen when the Kobo is sleeping rather than with white borders as it does with ePubs.
I prefer to use ePubs rather than kePubs, but I'm wondering if there is any method (firmware patch? alternative reader?) that will allow the ePub covers to be displayed full-screen when sleeping?