Just thought I'd toss this one out as well. Anyone with a use case that requires high network flexibility, vast node density, or just ubiquity of ANT+ devices might be interested in this announcement :)
http://www.dcrainmaker.com/2013/10/samsung-mobile-devices.html
Thinking about experimenting with a CC2571 scanning 400 0.5 Hz ANT masters and messaging back to them, or just some phone to phone applications.
Cheers