According to a report at 'wdwmagic', Pal Mickey is being discontinued. They will still maintain the service to accomodate folks who currently have the plush doll however only time will tell how long that will last. I wouldn't expect they would spend the time or money to update any of the services as attractions change either but again, we shall see.
Pal Mickey, the interactive plush that was introduced in 2003, will be discontinued. Although Pal Mickey will no longer be available for purchase, the interactive plush will continue to operate in the four theme parks as they do today. Pal Mickey will continue to be sold until current stocks are depleted.