They are basically filler points added as a sales incentive. Currently at AKV, if you buy you get AKV points that you will not be able to use for the first time until May 09. To fill that gap in time of having points to use, they will give you an equal number of "developer" points (meaning points still controlled by Disney) which are good for one year only from date of sale, allow you to stay only at SSR or a
Disneyland hotel, and you can reserve 7 months or less out. You must use them within the year or lose them.