Snowwhite,
Usually Disney assigns a use year based on what they are selling at the time. Use years are: Feb, March, April, June, Aug, Sep,Oct and Dec. You could request a certain use year if you have a strong feeling about it, and they probably would sell it to you if its available. It really isn't a big deal- After all, how often do you cancel a vacation at the last minute? You can always rent out points or give them to a friend if you can't use them.