I would assume it would go one of 3 ways. First, they lower the price of the Pro series down a couple hundred bucks and keep selling them. Second, they keep the price high basically discontinuing them without actually saying they are discontinued. Third, they just discontinue them all together.
i think the first way makes a lot of sense because they might get the people who were going to go cheap with regular coaxial tower speakers to step up to HLCD's but then again they might canibalize some of the sales on teh new HLCD's. If they do drop the price of the Pro series they may have to drop the price of their coaxial tower speakers or get rid of them all together. There may not be room in their line, while still making a profit, for 3 sperate priced tower speakers.