You need to call the dealer and ask him, it is not an offical "recall".
A certain range of serial #s is effected. The jackshaft was machined too small (we're talking less than a thousanth of an inch) and some have broken.
I took mine in at the end of this season after 6,000 miles with no problem but I figured I might as well get it done "just in case".
If your dealer does not know about the "UPDATE" find one who does.
Ther are also "Updates" for the CDI box and Clutch rattle.
I had the clutch one done last year and it still made too much noise IMO so they did it again. The CDI update is for TORS issues that my sled never had but I had it done anyway.
Sometimes the lowest price dealer is not the best deal.