IGN has a first look on the game:
http://wii.ign.com/articles/108/1084008p1.htmlWhat I got from reading it.......
- A lot of new weapons will be in this game (like this one gun that absorbs bullets or this one machine that you can use while camping)
- More enemies in the battlefield
- More better graphics
- You can use your own weapon set like in COD (so I guess this means no more voting for weapon classes! Yay!)
- You can climb ladders, go up stairs (Yes this game will have multiple floors in one building now), and take cover by flipping over tables.
- There will be boss battles
- The ASE will return
- Some doors require certain hand gestures from your wii mote to open

Expect prettier graphics.

One of the new guns in the game that absorbs bullets and then fires them all once it's fully charged.