Fire up your Wii U and start downloading another update.
http://www.nintendoworldreport.com/news/34272
Nintendo has made a new firmware update available to Wii U owners today. This follows last month's major Wii U firmware update, which had added a slew of noticeable upgrades to the system's performance and capabilities.
Nintendo claims that this latest update provides "further improvements to overall system stability and software compatibility." This description, while not very specific, could mean that Nintendo is working on improving the Wii U in small ways even between major updates.
Now I'm curious if my system just has this update since they put in the background download and install.