BlackBerry users with the app installed prior to April 10 will be able to continue downloading eBooks and audiobooks via OMC. However, no further development or testing will be dedicated to it.
In the past year, OMC for BlackBerry has experienced a steady decline in downloads. Only .3% of all visitors to digital library websites come from a BlackBerry device. After much consideration, OverDrive has decided to remove the app from BlackBerry App World and continue to focus our development efforts on more widely used platforms such as iOS and Android—both of which have more daily downloads than BlackBerry has monthly.
Without the OMC app you can always use OverDrive Read to get eBooks.