Version 6.2 includes the following changes:

• Support up to max 50 joysticks (previously 32 joysticks)
• Support up to max 128 buttons (previously 32 buttons)
• Enhanced an execution of an external program to be able to
  • pass command parameters
  • specify the starting working directory
• In the button assignment window, added navigation buttons to go to the next and the previous assignment.
• In case JoyToKey is started when no controller is connected, JoyToKey tries to automatically detect devices until one controller is connected. From this version, users can change this behaviour such that JoyToKey continues the auto detection until two controllers are connected, or completely disable this auto detection feature. For more details, please refer to this page.

 Recent releases includes the following changes:

• Single click a task tray icon to refresh joystick connections
  When you connect a new joystick to the PC, you can just click the task tray icon to get it recognized (either left click or right click).
• Supported multiple screens for the absolute movement of a mouse cursor.
• Supported additional key-code emulations such as the volume control (up / down / mute), media control (prev / next / play / stop), and SCROLL_LOCK key.
• Changed the default key emulation code for arrow keys, R-Alt and R-Ctrl, to fix some compatibility issue with recent Windows 10. In case it causes a problem for certain old games and you want to use the old key code, in the button assignment window, please select an equivalent key (from right-click menu) which is labeled as "for DirectInput".
• Ability to re-process the key emulation event when the same key continues during the processing of Input1-Input4 sequence (Keyboard 2).
  By default, when processing the sequence of key emulation through Input1 to Input4, if the same key assignment continues, it's emulated only once. This behaviour can be changed from "Options" tab by enabling the following checkbox: "Re-process when the same key continues in sequence"

Complete version history can be founded here, and the latest version can be downloaded from here.