Nintendo slipped in the second firmware update for the Wii U and the fourteenth update for the 3DS Tuesday night.
The details on the updates are hazy, noting, “Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience.” No details on what those “further improvements” are exactly, though. Nintendo has a Nintendo Direct showing scheduled for 12 p.m. eastern standard time today. Perhaps some details will come out of that.
Source Nintendo