They showed one mode on one map.
So far this is confirmed:
- It will have a singleplayer mode
- It will have more advanced multiplayer modes
- It will have multiple maps (obviously)
- It will have character customization
- It will have multiple special weapons like snipers, bazooka, giant paintroller, etc.
- It will have fully incorporated voicechat according to some sites
- It will support some kind of local multiplayer, but they weren't sure yet if it was going to be splitscreen