New features
Allow customizing the buttons available to the right of the search bar in the main calibre window via Preferences->Toolbars & menus->The buttons on the searchbar
Book details panel: Allow adjusting the space used by the cover with a splitter
Closes tickets: 1994065
Make splitter handles more visible in the calibre UI style
When sending by email to kindle dont include the author in the filename as amazon is currently reading the author from the file metadata but not the title
Closes tickets: 1994136
Bug fixes
Book list: Fix incorrect rendering of yes/no icons when they are configured to have only two values
Closes tickets: 1993051
Nook driver: Send books to the NOOK folder for the 2021 Nook model as well
Closes tickets: 1990730
Improve performance in very large libraries of various UI operations such as right clicking, marking books, etc.
Fix edit metadata dialog not remembering its position and improve how calibre restores window position and size on multi-monitor systems
Conversion: Fix CSS styles applied to SVG elements being discarded
EPUB Input: Fix empty adobe page number template file causing conversion to fail
Closes tickets: 1995551
E-book viewer: Fix rendering of comments in metadata display when using a dark color scheme
Closes tickets: 1995214
AZW3 Input: Fix svg images that use a prefix for the SVG namespace not being recognized
Closes tickets: 1994988
Edit book: Fix double clicking in the see what changed dialog not opening the file in the editor since calibre 6.0
Edit book: Fix modified indicator on images not working correctly when replacing the image
Amazon metadata download: Adapt the plugin for website changes
New news sources
Fifty Two by unkn0wn
Bloomberg and Bloomberg Business Week by unkn0wn
Improved news sources
Army and Navy Times
eenadu_ap
Handelsblatt
https://calibre-ebook.com