Nintendo has pushed out firmware updates to its Wii U and 3DS consoles. In the case of both updates, Nintendo states that they offer "further improvements to overall system stability".
This is the second update for the Wii U, following the 1GB install which occurs when new systems are switched on and connected to the internet for the first time. Apparently, this latest update is around 500MB in size. It took just under an hour to download and install on our Wii U, but you might find that figure is different for you.
We've downloaded and installed both updates ourselves and haven't noticed any changes so far. Perhaps the update is laying the groundwork for something big in today's Nintendo Direct presentations? Or maybe it just solves the annoying Wii U freezing problem many users have experienced? We'll soon find out.