Calibre 2.69 is now the latest and most advanced version of the application, and it comes two weeks after the release of Calibre 2.68, bringing support for firmware version 4.1 to the driver for Kobo e-book readers, along with support for Overdrive books on the device. We’ve spotted to other interesting new features in Calibre 2.69, namely the ability to highlight class names inside HTML tags, which has been implemented in the Edit Book component of the applications, and the ability to search and replace rating columns in the Bulk Metadata Edit dialog.