Just to be clear, the program itself will not cease to function. However, it will no longer be available to buy- nor will any of the downloads- after May 31st. In addition, SU is discontinuing print services and will no longer have technical support for the program.
This gives us a couple of months to purchase any remaining downloads that we want and backup the downloads we currently have. I highly suggest all my fellow MDS lovers make sure your program and downloads are safe on an external drive in the coming two months.