Alinghi seems to be contemplating a rigid sail and no foresail, like an oversized C Class. Simple, fast and effective.

If things stayed as they are today, we would see an oversize/overpowered ORMA Open 60 racing against an aversize/overpowered C Class.

Note that it is relatively easy to add a central hull to a wide cat as well as removing the central hull from a tri, so both sides can choose to go either way.

The key decision is between a rigid wing requiring no central structure/hull, against a rig with foresail, requiring the hull/structure.

Chances are that we'll see a match between two 90 x 90 cats with rigid wings and without foresails. They sail upwind all the time anyway, so a big wing is all they need to dump tons of hardware and crew.

Best thing is that we already know the name of this race: The Monster Little America's Cup.