Some interesting developments with Americas Cup www.yachtingworld.com/blogs/matthew-sheahan/new-americas-cup-class-revealed-think-46-knots-in-16-knots-of-wind-and-thats-just-the-start-63197
46knots in 16kn of wind

Why would tilting the rig make such a difference? It's something the ORMA 60s have been doing for years and it certainly doesn't make them go 15 knots faster, just like tilting a windsurfer rig doesn't make a windsurfer much faster.

Vestas also had very different foils, which are slower at the low speeds that are inevitable in a boat designed for racing around a course in a wide range of conditions.

Using Vestas as a model for AC boats is like using a land speed record car as a model for F1 racing. They are different designs for different purposes.

Macroscien said..
In next few years I would like to see the release of the rules again and allowance for movable sails position.
If instead of central position , base of the mast could slide from one hull to another after each turn, then this asymmetric will speed out
Americas cups from turbo to speed boat, from 48 knots into 60ish territory.