We can't really see Apple going it alone on this one for hardware's sake, and their partnership with Moto, which once seemed so promising, now appears rocky at best after the nano quasi-betrayal (his namely evidenced by Moto's wandering musicphone eye, lining up some seriosu musicphones without iTunes left and right post ROKR E1, like the ROKR E2).
ENGADGET: Apple MVNO rumors: part deux