Changelog for Patch 22.08.2016 / GOG-3 (added 22 August 2016):
- Added an in-game exit option accessed through the menu
- Added an option in the configuration menu for reversing the camera controls
- Fixed various graphical glitches

Changelog for Patch / GOG-4 (Windows) (added 05 September 2016):

- Added an in-game exit option accessed through the menu
- Added an option in the configuration menu for reversing the camera controls
- Fixed various graphical glitches

That changelog obviously is wrong as it doesn't differ from the previous one.

From steam :

9/7/16 patch notes:

-Added an icon for the exit option
-Fixed a bug that prevented Hardworking Farmers from doing damage
-Mouse now hides while playing
-Fixed various visual bugs

We're still looking into optimizations to improve performance and stability. We'll let you know as soon as we find out more.

Thanks again for sticking with us while we continue to figure things out! Ministers Liam and Verde are on the job!

(Maybe we should get Princess Bouquet in here too...)

Changelog for Patch / GOG-5 (Windows) (added 22 September 2016):

- Fixed the bug where getting too close to a target becomes unresponsive.
- Fixed the bug where achievements were not unlocked after clearing the game.
- Princess Spumoni’s Gourmet Book can now be completed.
- Fixed various text formatting issues.

Changelog for Patch / GOG-6 (Windows) (added 9 February 2017):

- A variety of optimizations for overall performance improvements.
- Added multisampling anti-aliasing, transparency supersampling anti-aliasing and anisotropic filtering options.
- Implemented analog controls for Xinput-compatible gamepads.
- Improved 60 FPS mode by fixing simulation time progression rate, speed of many effects and object animations, and the movement speed of NPCs and animals. However, some scripted movements during boss battles might still be sped up or broken, so added a workaround where you can press “F1” to enable a temporary 30 FPS lock in 60 FPS mode.
- Replaced the game launcher with a new version with many usability improvements.
- Fixed save game playtime being calculated incorrectly.