9to5Mac hears that the iPhone and iPod touch are getting a radio app like the nano’s that’ll be able play FM radio in the background. It’ll be integrated with the iTunes store, supposedly, so you can buy songs you like.
https://gizmodo.com/ipod-nano-review-5356015
The hardware capability for FM radio does exists in some models—the current iPod touch and iPhone 3GS have FM transmitters, and the 2nd-gen iPod touch also has a chip that’s capable of receiving FM signals, though it uses it for Nike+ stuff (so if there is a radio app, maybe it’ll just be for current-gen models).
https://gizmodo.com/new-ipod-touch-teardown-reveals-802-11n-fm-transmissio-5357667
It’d make sense to add more software parity across the line, but who knows—no date given for when we might actually see this FM radio app. [9to5Mac}