[You must be registered and logged in to see this image.]
The Wii U received yet another firmware update this week, though it is apparently a minor one ahead of a larger feature update, which Nintendo says is coming in April. This update, for firmware version 2.1.3 U, brings "further improvements to overall system stability."
The larger feature update, which Nintendo previously announced for this spring, will bring Virtual Console support to the Wii U, launching with a selection of NES and SNES games.
~ Source