Dr Hsu has said they are working on something but didn't say what, and he said it won't be out for awhile. I am sure that SVS is not just going to stay put as well. I doubt that either company is working on some massive ultimate sub, that is more for small scale companies. When a company like SVS and Hsu release a sub, they have to get all their ducks in a row, so to speak. They have to line up reliable manufacturers and suppliers, they have to have a finalized, well tested design that will have a low failure rate, they have to set up new QA processes, they have to build up inventory, not only of whole units but replacement parts because they have to be able to support these products for years to come, they have to work out just the right pricing, they have to have all kinds of certification and documentation and so on. It probably isn't worth it to do all that for some super sub that doesn't generate much overall profit with respect to more ordinary designs, even though the super sub might have a higher profit margin per individual unit.