I heard this from someone and I have no factual basis of it, but it seems like there may be some truth to it regarding production of electronic musical instruments. Keyboard production by manufacturers is supposedly somewhat similar to other higher end item manufacterers in that there is a timing involved with the release of items due to several factors. Releasing a new product costs money that carries a higher risk factor.. Manufacterers try to minimize this risk as to not release an item "ahead of its time". New item sales must exceed, or at least be close to a manufacterers "old faithful" product's sales in order to be successfull in the continuence of its production. Unfortunately, in other words, production is not done in the spirit of the items functionality or purpose. Instead, it is produced in the spirit of business, or more specifically, its profitability. Where I see the truth in this is the fact that; no matter how great an item may be, if it does not meet the current trend of functional use or needs, its chances for continued success are minimal because it will likely not generate enough sales to pay for the costs of initializing its existance into the marketplace. This explains all those items that were produced for 1-3 years or so and then were dropped in production only to wind up 10 years later in insatiable demand. Planting a seed you they hope will be a cucumber but only winds up a coctail pickle that later on miraculasly becomes the watermelom everyone wants. As much that manufacterers desire to take the credit of great pioneering items, very rarely does a new truly great product hit the ground with its feet running in high profit mode. The more common instance is the item becoming buried in promotional marketing costs for at least the first year of its production and does not see black ink in its production until a year or two later, and that is a successful item. This may help us understand why these manufacterers throw the seeds of promotion out way ahead of time; before the prints are approved for production in any great quantity, and also why they wind up releasing items late of their scheduled availability date. All manufacterers want to be known for their great pioneering achievments in their industry, but not at the cost of their existance.