As a FuelBand wearer, I have payed close attention to Nike as it relates to Apple/iOS.
For many months, the Nike+ FuelBand sync service worked flawlessly. As of about 4 months ago, it started having all kinds of issues. It was going down for maintenance constantly and was generally unreliable. Clearly, they were working on something new/big.
I figured it was FuelBand 2, but now it is clear that Move is the likely culprit. I also believe that they are preparing for an iWatch, which the M7 + Move are obviously a prelude to.
My prediction is that there won't be a FuelBand 2, but rather a stock integration in the iWatch with Nike+ products/services.
In case you aren't aware, Tim Cook sits on the board at Nike.