Version 2.1.3-U/E (5 March 2013)
- Further improvements to overall system stability have been made.
- The previously announced system update, which adds new features and further improvements to the user experience, will be released in April.
Version 2.1.0-U/E (5 December 2012)
- Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience.
Version 2.0.0-U/E (19 November 2012)
- Added new Network features
1 In order to use those features, you will need to register Nintendo Network ID.
2 You can use this feature in Wii Menu.
3 Update feature is available only for the software which has update data.
Europe Launch System Software
US Launch System Software
Note: changelog taken from Nintendo