rom Jawbone today. The accessory-maker behind the popular line of Jambox speakers introduced a new version of its UP fitness-tracking band, the UP24, as well as a big 3.0 update for its UP iOS app.
While the new UP looks very similar to its predecessor, it does feature one significant hardware change: it now uses Bluetooth 4.0 to connect to your iOS device, instead of forcing you to plug into your audio port…