This guy got Battalion Wars II sent to him from Nintendo and typed up some interesting info after playing for three hours.
Overall it seems like he's pretty pleased with it, although the single player campaign may be a bit short, but he's not sure since he hasn't finished the game.
Another point about local multiplayer may disapoint some:Other notable comments:The game is only for one player per Wii. It has a single-player campaign and multi-playaer options. But the “BW2″ multiplayer Co-op, Skirmish and Assault missions are only available over Wi-Fi.
the game has been very fun and looks like a nice but modest graphical step up from the first one. The quick pace of the action, the satisfying chaos of battle and the charm of the visual design all intact.