System Software

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
  • Nintendo Network ID creation and linking feature
  • "Miiverse" ^[1]
  • "Nintendo eShop" ^[1]
  • "Internet Browser"
  • "Friends List" ^[1]
  • "Wii U Chat" ^[1]
  • "Notification List"
  • "Download Management"
  • "Wii System Transfer" ^[2]
  • Software update feature ^[3]
  • USB storage device feature

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.

Version 1.0.1-E

Europe Launch System Software

Version ?1.0.0?-U

US Launch System Software

Note: changelog taken from Nintendo