It's too early to guess, but wouldn't it be rather difficult to have such a small screen when using the Wiimote/Nunchuk combo? It would be nice for SSBB, though.
Usually those type of screens are made by third party companies and since very few have access to the console, there is little chance that there is a portable screen availiable for launch, but since it is the smallest of the three systems, I wouldn't be surprised if one was eventually made for it.
And I don't see how it would work with the sensor bar and all that stuff...you'd be stuck playing VC titles, which is fine...but most people would expect it to play wii titles as well.
it would be hard to move around so much in the car with the wiimote. and the console is so small it would be hard to make a screen for it. my GC screen is already too small and the Wii is even smaller.
