I love Assassin’s Creed, so when I heard AC3 would be on the Wii U, I figured the controller’s touch screen would be used as a database mainly displaying your map. Not only is that going to be the utilized, but a few extra features will be utilized. The tablet is going to be some form of a link to the Animus, presumably, containing all of the pause screen features found in previous Assassin’s Creed games. As such, you can access the database on the tablet, all entries will display on the tablet when acquired.
You’ll be able to easily swap between weapons and single & dual-wielding with the touchscreen. The main thing I’m looking forward to is the Eagle Vision on the tablet. Using the accelerometer, you can control the camera while using Eagle Vision.
Source: My Nintendo News