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QuoteVersion 5.2.0 U:
Released September 29th, 2014
Changes to the Wii U Menu:
Folders can now be created in the Wii U Menu to hold and organize software icons
A Download Management icon has been added to the Wii U Menu
Changes to Quick Start Menu:
The Quick Start Menu will now display when the Wii U is powered on from the Wii U GamePad TV Remote
Options have been added to Power Settings that allow users to hide certain software from the Quick Start Menu
Changes to the HOME Menu:
The design and layout of the HOME Menu has been updated
Changes to the Nintendo eShop:
Disabled usage of characters not used when redeeming Nintendo eShop cards (O, I, Z, etc.)
Improvements to system stability and usability:
Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
Fonte:
http://www.reddit.com/r/Games/comments/2hupzr/nintendo_releases_wii_u_firmware_version_520_u/