Timbo, they're getting more of a four pointed lift out of both boards and rudders and are shifting toward a system where they use both daggerboards instead of raising one on each tack/gybe. The stability is increasing as a result. It's not totally unlike the lift distribution on a typical airplane but the wings on the rudders (aka, horizontal stab) are carrying more of the balancing load than they used to and it's getting closer to sitting on four legs instead of balancing on the daggerboards with the rudders providing attitude trim.

The issue with USED to be that the boat would porpoise badly trying to get to stable flight if they tried to more evenly distribute the lifting force between the boards and rudders (early Team New Zealand / Pete Melvin testing) but it looks like they've found a happy medium on the A-cat that results in pretty good stability and without the need to constantly adjust stuff. This may be where the foiling catamaran has an advantage over a foiling monohull (like a moth).