changelog: https://sw.kovidgoyal.net/kitty/changelog/#detailed-list-of-changes

0.43.0 [2025-09-28]

• New support for creating and switching to Sessions easily, allowing users to define and use sessions/projects efficiently (#8911)
• Add a configurable scrollbar for the kitty scrollback (#8945)
• A new protocol for multiple cursors in the terminal (#8927)
• macOS: Allow the window title bar to be semi-transparent when background_opacity is less than one and macos_titlebar_color is set to background (#8906)
• A new cursor_trail_color setting to independently control the color of cursor trails (#8830)
• macOS: Add the default Cmd+L mapping from Terminal.app to erase the last command and its output (#6040)
• Fix background_opacity being non-linear especially with light color themes. Note that this might require you to adjust the value of this setting to get back your current look. (#8869)
• Add support for blinking text. Text marked as blinking now blinks in exact rhythm with the cursor. The blinking animation and max duration are controlled by cursor_blink_interval and cursor_stop_blinking_after. (#8551)
• Allow using a custom python function to draw tab titles in the tab bar, see tab_title_template
• Wayland: Fix incorrect window size calculation when transitioning from full screen to non-full screen with client side decorations (#8826)
• macOS: Fix hiding quick access terminal window not restoring focus to previously active application (#8840)
• macOS: Fix showing the quick access terminal on a space other than the space it was last active on, after full screening some application causes the quick access terminal to appear on the old space (#8740)
• macOS: When toggling open the quick access terminal move it to the currently active monitor (the monitor with the mouse pointer on it) (#9003)
• macOS: Fix closing an OS Window when another OS Window is minimized causing the minimized window to be un-minimized (#8913)
• Allow using backspace to move the cursor onto the previous line in cooked mode. This is indicated by the bw property in kitty’s terminfo (#8841)
• Watchers: A new event for global watchers corresponding to the tab bar being changed (#8842)
• Fix a regression in 0.40.0 that broke handling of the VS16 variation selector when it caused a character to flow to the next line (#8848)
• Fix rendering of underlines when using larger text sizes with the space and en-space characters (#8950)
  Fix updating panel configuration on visibility toggle and via remote control not working (#8984)
• Improve rendering of rounded rectangles (#9000)
  Wayland: Update bundled copy of libwayland to 1.24 from 1.23.1 because the just released mesa 25.2.0 breaks with libwayland < 1.24 (#8884)
• macOS: Pass the Cmd+C shortcut to the application running in the terminal when no text is selected (#8946)
• macOS: Workaround for bug in macOS Tahoe that caused closed OS Windows to remain as invisible rectangles that intercept mouse events (#8952)
• macOS: Workaround for bug in macOS Tahoe that caused OS Windows that are fullscreen on a monitor that is disconnected while macOS is asleep to crash kitty (#8983)