Sayyyy....remember when you first plugged in your Wii U and had to wait ages for a firmware update to download before you could even play? Time to do that again! Nintendo has issued another firmware update as of today, said to add "further improvements to overall system stability" and "minor adjustments [...] to enhance user experience".
Users are saying the download and install takes 45 minutes to an hour.
An update for the 3DS going by the same description is live now as well.