Slowly the Wii U becomes more and more stable.
http://www.nintendoworldreport.com/news/36009
Nintendo has released a new Wii U firmware update for the Wii U, bringing the version number for the system up to 4.0.2.
The update is only a small one, adding further improvements to the overall system stability and some other minor changes that will enhance the user experience.
Isn't TVii basically a web app, though? Like Miiverse, I don't think that's something that would get updated with a firmware update - it just happens whenever you log in after Nintendo (or whoever manages it) decides to update it.