Calibre 3.11 is the latest stable release of the application, and, according to the release notes, it now supports the all-new Kindle Oasis e-reader from Amazon, which is also company’s very-first waterproof Kindle device. Support for Kindle Oasis was implemented in the Kindle driver so you can connect it to Calibre to sync books. Also new in this release is support for controlling the look and feel of the text in the browser viewer by specifying custom CSS style sheets, the ability for the app to display the original word in italics in the list of suggestions under the Edit Book Spell Check feature, and the implementation of a contains rule type in column coloring.