There's a new Wii U software update out. 5.2.0 redesigns the home menu, allows the creation of folders, disables certain unused keyboard characters when inputting eShop codes, lets you hide certain software from appearing on the Quick Start Menu, increases stability and lets you create folders.

I had to do that once twice because it's finally here. Checking for updates in the system settings will start its download if you don't want to wait for it to auto-download.