System Software

Version 3.1.0-U/E/J (10 July 2013)

• The standby functions will now regularly connect to the Internet when the Wii U is powered down to check for available SpotPass data or software and system updates
• Further improvements to overall system stability and software compatibility

Version 3.0.1-U/E/J (20 May 2013)

• Further improvements to overall system stability and software compatibility

Version 3.0.0-U/E/J (25 April 2013)

• New Features:
  • A standby function to download and install software while the system is powered off
  • Software purchased from the Nintendo eShop will automatically install in the background once the download is complete
  • Holding down the B Button while the Wii U logo is displayed during startup will load the Wii Menu* ^[1]
• Changes to System Settings:
  • An option to transfer and/or copy between two USB storage devices in "Data Management"
  • The ability to select multiple software titles when transferring, copying, or deleting data in "Data Management"
  • The option to adjust screen size is now available under "TV"* ^[2]
  • "Auto Power-Down" has been renamed "Power Settings"

• Changes to Miiverse

• Changes to Nintendo eShop

• Changes to the Internet Browser

• Changes to Download Management

• Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience

¹  User selection may be necessary.
²  A similar option has been removed from Nintendo eShop, Miiverse, and the Internet Browser.

Version 2.1.3-U/E/J (4 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/J (4 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/J (18 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 1.0.2-U

US Launch System Software

Version 1.0.1-U/E

US & Europe Launch System Software

Version 1.0.0

Prerelease/Prelaunch System Software

Not distributed in the wild.

Note: changelog taken from Nintendo