Satoru Iwata detailed some of the new features due in the spring update of the Wii U firmware that is due for release next week. The new firmware improve load times, copy or transfer day from Wii units, automatic updates, and adding background download. The new Wii U Panoramic View experience is also included allowing viewers free camera sightseeing if you will.
You will also be able to launch Wii mode by pressing the B button as the console boots up. The system will download and install updates even when turned off.
Furthermore, Virtual Console for Wii U will launch the day following the update and will feature off-TV mode as previously stated. Among the titles available day one are Super Metroid and Ice Climber.