The latest issue of Famitsu has reveiled new details about Capcom vs SNK 2, including controls, modes and a new name.

The official title will now be Capcom VS SNK 2 EO and the game is still on for its July release in Japan (probably an Autumn release here then). It also says development has been completed.

Here are the two control setups ofr the game:
The first option is the traditional arcade control setup. The second option is designed specifically for the GameCube controller. Character movement is controlled by the control stick. When you do not move, your character will block automatically. R and L trigger buttons allow you to punch and kick. The duration you hold down the buttons determine if the attach is strong, medium, or weak. Special attacks can be executed with the C stick.

Game modes now include Arcade, VS, Training, Survival, and Color Edit.

Source: Planet Gamecube