According to fresh reports, Amazon is working on two smartphones: A superphone that uses four forward-facing cameras to track your face and eyes to create a 3D user interface, and a cheaper, no-frills device that might be available for free, both on- and off-contract. Amazon had hoped to release the devices already, but "difficulties with both hardware and software" have resulted in a postponement -- probably until sometime next year. Both smartphones will almost certainly run Amazon's modified version of Android, Fire OS.