When the plans “change” in 2010, they really aren’t going to change. They will be the same plans, just split into two different groups – the before the switch date group and the after the switch date group. The only difference is what “pool” you may end up in. Both pools, since they will be closed, will likely initially see a decrease in premiums. Whether or not the prices will continue to remain low is a good question.
Often a closed risk pool means higher prices for benefits. There is apparently another two additions to the Medicare supplement line up, Plan M and N. However, there is limited information available on what they will offer.