You might have to manually go into settings to prompt the update, but there is indeed an update available for the Wii U. This will put you up to 2.1.3 U with firmware. We'll add details on what the update does as soon as we hear. Thanks to Alan for the heads up!

Version 2.1.3 U available via an Internet connection includes the following improvements:

Further improvements to overall system stability have been made.*

*The previously announced system update, which adds new features and further improvements to the user experience, will be released in April.