Nintendo has posted yet another Nintendo Direct which discusses storage options, backward compatibility plus lots of other important information heading towards Wii U launch.
Some of the highlights include :-
Basic pack only comes with just over 3GB of usable data storage
Up to 2TB data storage accepted, Wii U will format the hard drive and it will not be usable with a PC
Only one drive at a time
Cannot guarantee system can power a one USB cabled drive
Wii U Virtual Console coming in the future.
Unable to accomodate current Wii Virtual console customers requests to Gamepad play.
Premium users 10% value back can be used on Wii U eShop as well as 3DS, Wii and DSi.
10% value back also applied on eShop cards bought instore.
You can find the full transcription below as provided by
cvxfreak over at NeoGAFParental Controls- Nintendo realizes that some parents may fear that their children may use the Wii U's internet functionality without permission. Wii U has Parental Controls.
- Can restrict content based on user age, CERO (Japan ESRB) rating, internet functionality, internet browser, e-Shop spending, Miiverse functionality, friend registrations, videos, data management, internet settings
- Wii U keyboard input can save user input habits and predictive input in a specific database that depends on the game and user. Wii U does not save input data that you don't want other users to know into the database.
- Miiverse settings can be turned on/off depending on the save profiles per game.
USB Data Storage
- 8GB = 7.2GB, 32GB = 29GB in terms of actual save data. Wii U uses around 4.2GB when using the system for the first time.
- NSMBU is ~2GB, Nintendo Land is ~3.2GB. So, both won't fit into the Basic set at the same time.
- Wii U lets you put data onto a connected USB media drive.
- One USB drive at a time only.
- Cannot disconnect the external drive while plugged into the Wii U and receiving power.
- You can use general drives.
- In terms of powering the HDD while connecting to the Wii U, if you do not use a Y Cable Type drive (2 USB cables), then Nintendo cannot guarantee it will work properly.
- Nintendo can guarantee functionality if the HDD plugs into a power outlet.
- No games on USB Flash Memory due to games not running properly all the time (whatever this means...)
- Wii U will read up to 2TB only for external hard drives even if hard drive has more space.
- In Data Management, you must format the connected media drive. Note that this means you cannot use the drive with a PC.
- You can move data from internal Wii U storage to external USB media in Data Management and vice versa. Data on both internal and external media will appear in the menu.
- At launch, only 1 USB hard drive can be connected, but through a future update, more than 1 will be possible and you will be able to move data between them freely.
- SD Cards can hold PC data, Wii Virtual Console, Wii Ware, and Wii save data, but cannot be used to save Wii U game save data.
Backwards Compatibility- Wii games, Virtual Console, Wii Ware stuff cannot be played using the GamePad screen, but only on the TV in Wii Mode
- Iwata: "We understand that there are people who were looking forward to playing Wii games, Virtual Console games, and so forth on the GamePad, but unfortunately we cannot accommodate those users' expectations."
- There are plans for a Wii U Virtual Console that WILL be compatible with the Wii U GamePad. Please look forward to it in the future.
Nintendo Network Premium- For Premium Set buyers only
- Point service
- Make Nintendo Network ID, then login to find and use the service
- After logging in, you can see the points you have earned
- Buy with download card or download number
- Earn 10% back on purchases
- Earn back purchase points in ¥500 increments
- Points earned can be used with Wii U/3DS e-Shop, Wii Shopping Channel, DSi Shop
URL to share (right click and copy) 
