New Features
- E-book viewer: Read aloud: On Windows switch to using the new Microsoft speech subsystem with access to more voices
- calibre:// URL scheme: allow specifying a Virtual library for show_book URLs
- Add by ISBN: Allow adding using identifiers other than ISBN as well
- Update bundled Qt to 6.4 this means calibre on macOS is now only supported on Big Sur and newer
- Spell check dialog: Allow up and down arrow keys to work regardless of focus
- Allow multiple Template tester dialogs
Bug Fixes
- Windows MTP device driver: Ignore failure to enumerate objects inside non-root folders
- Book list: Fix a regression in the previous release that broke dragging to select multiple books
- Content server viewer: Fix reload book not actually reloading until the browser is also refreshed
- E-book viewer: Fix occasional false warning about highlight being overwritten
- E-book viewer: Fix detection of selected highlights when all text is selected
- Fix an error when embedding metadata into a large number of books
- When updating metadata in EPUB 2 files and no language is specified, do not remove the <dc:language> tag as this causes epubcheck to complain. Instead set the language to "und"
- Wireless device driver: Remove the timeout for initial connection
- Use an icon rather than a color to report errors in fields and the search box
- Conversion dialog: Regex builder: Workaround bug in Qt that prevented searching for non breaking spaces in the wizard used to test search expressions
- Spell check dialog: move down after correcting word, not up
- Get books: Fix Mobileread store plugin not working
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