I can't wait for this game! Anyway here is some stuff about it:
Story: Meteors hit the earth and turn it into a wasteland, 90% of the population is killed, people start killing each for supplies. (It's a strategy game if you don't know)
Online: The game will feature online battles via Nintendo Wi-Fi thingamagig. It will also support voice chat, but only to people you exchanged friend codes with. You can also upload your maps (created with the map maker thingy) and download other ppl's maps.
Stuff: I assume the game will have the usual campaign mode with a bunch of missions, and a butt load of maps playable against coms and friends like the last game.
One difference in the game besides the online is the developers are trying to make it more stylus friendly, In Advance Wars Dual Strike you could either use the d-pad of stylus, but the stylus control didn't work that great. There will also be a couple more units like motorcyles and a flare truck (for foggy maps).
As far as I know that is all that been released about the game. It comes out on Jan. 21 2008.
VIDS, Well it seems not all the maps are wastelands, thats good.