SmokeInFog

diff kitten: Automatically use dark/light color scheme based on the color scheme of the parent terminal. Can be controlled via the new kitten-diff.color_scheme option. Note that this is a default behavior change (#8170)
Allow dynamically generating configuration by running an arbitrary program using the new geninclude directive in kitty.conf
When a program running in kitty reports progress of a task display it as a percentage in the tab title. Controlled by the tab_title_template option
When mapping a custom kitten allow using shell escaping for the kitten path (#8178)
Fix border colors not being changed by auto light/dark themes at startup (#8180)
ssh kitten: Fix kitten not being on PATH when SSHing into Debian systems (#7160)
diff kitten: Abort when run inside a terminal that does not support the kitty keyboard protocol (#8185)
query kitten: Add support for reporting name of the OS the terminal emulator is running on (#8201)
macOS: Allow using the Passwords app to autofill passwords via the Edit->Autofill menu mimicking other macOS applications (#8195)
macOS: Add menu items to the Edit menu to clear the screen and scrollback
Fix the clear_terminal scrollback action also clearing screen, not just the scrollback
When reloading configuration fix auto color themes not being re-applied (#8203)

kitty 0.39.0 released - changelog