Sigil 2.6.0 is a mixture of bugfixes and new features.

New Features

• Added in new CodeView Insert menu item: "Role..." (epub3 only) to make adding Aria role attributes and epub:type attributes where allowed easier
• Added in new CodeView Insert menu item: "Aria Clips..." (epub3 only) to make adding code clips that improving Accessibility easier.
• Made the Epub3 Tools menu submenu items be shown as disabled on Epub2

Bug Fixes

• prevent crash on Windows when hand typing in an external url in Add Existing files
• fix bug in how nav is handled by Prettify (Thank you BeckyEbook)
• fix bug in wait cursor appearing when showing last epub open warnings
• fix crash caused by empty Automate lists (Thank you BeckyEbook)
• fix wild card disconnection Qt warnings
• fix class initialization reorder warnings
• remove now unnecessary workaround for sys.argv not being defined in embedded python
• fix bugs in regex search and replace by using PCRE2 NOTEMPTY to match Sigil logic

Notes:

The Sigil Linux AppImage is built on Ubuntu Jammy (22.04) and is targeting glibc 2.35 and higher. Use ldd --version to see if your system at least has a shot at being able to use the AppImage. Don't forget to make sure the AppImage is executable after downloading. Trouble is not expected but be safe and backup your existing Sigil preferences (if you have any) before trying the AppImage.