I found that out this morning talking to Bob from the AZYC. He was picking up @WestCoast 's demo Melges 15 and he mentioned what the origin of the SOL was, from the Sunfish Direct. He said that due to the difficulty of getting Sunfish, they may want to use the SOL for future Worlds.Sol is the boat design of the largest importer of Sunfish sailboats in the US. There must a back story of why they are releasing a model of boat that they control the market on.
For those that panned the ILCA class and what they had to do to wrestle control away from LP to save their class, here you have the exact same situation in the Sunfish class. Instead of wrestling molds away from the builder, which I don't think that they have any legal recourse for, they had to knock off the boat to a large degree to keep the class alive. Again, LP screws up.