There's quite a few wooden J-boat models around, but 12 meter boats are few and far between. I recall seeing some expensive 12-meter kits with resin hulls from someplace in the UK, but can't seem to find the link right now.
I've got mini Mamoli America and Endeavour II solid-hull models that I just started sanding and correcting the hull shapes on this past weekend.
One of the problems I see with the current boats is the teams are so secretive, they're not likely to let any model company take the lines off their hull or keel bulb to make a model of it. I've actually played with the idea of drawing up my own plans by scaling off photographs and doing some creative 'guessing' in order to scratch build either Alinghi or BMW Oracle. Got lots of great video taping the semi-finals last week on Versus.
Mark