So Nintendo released a promo video for the pedometer yesterday as seen here:
The interesting part about it is the cost. If you buy the Pedometer, and have a balance board, you can sync the pedometer with the WiiFitU trial and you get the full game. If not you can buy it later with the Balance Board and Pedometer for $90, or just the Pedometer for $50.
No idea on how long this will last, so if you are interested go for it soon.