New features: Driver for the new Bq Cervantes 4. Edit book: Auto-generate links to existing stylesheets when adding a new HTML file. Add a button to easily clear server logs in Preferences->;Sharing over the net->;Show server logs. Catalog generation: Store the list of fields to be used in generating CSV/XML catalogs per library. Bulk metadata edit: Make the custom series controls similar to the builtin series ones, with the same set of features. Edit book: Pre-select existing cover image (if any) in add cover dialog. Make the Manage saved searches dialog a little easier for new users. Add a tweak to control behavior of Enter on the book list Content server: Fix random book button on book details page multiplying. Edit Book: Bulk file rename dialog: Remember last used prefix for renaming files. Bug fixes: Tag browser: Fix use of the tweak to control order of items in the Tag browser causing unexpected expansion of items after editing metadata. Content server: Improve rendering of tags/categories with long words on small screens. Fix first added saved search not appearing in Tag browser until calibre restart. When checking added books for duplicates, also check on the language field. So books with the same title/authors but different languages are not considered duplicates. Edit Book: Spell check should not fail if there are non-HTML files in the spine. Conversion: Fix an error when using the embed_all_fonts option with certain books. Save to disk: Dont error out if the user deletes all formats to be saved. Linux binary: Fix calibre not starting on systems where QT_QPA_PLATFORM is set to use wayland. New news sources: Various Russian news source by bugmen00t. Improved news sources: The Economist. The Walrun Magazine. China Daily. Telepolis.