This information pops up on the Apple website when attempting to purchase an unlocked "SIM-Free" iPhone 6 or 6 Plus, when clicking on the link marked "Learn more about the unlocked iPhone" Also, looks like the unlocked versions match the model numbers for the Sprint models, and has all LTE bands required for Sprint Spark. It'll be interesting to see if this is actually the case. Not that I doubt the phone is technically capable... it definitely is. The question is, will Sprint allow it? Not that I advocate anyone signing up for Sprint. But, this does put a dent in Sprint's claim that iPhones on Sprint "cannot be unlocked to accept another domesitic carrier's SIM," and there is "no technological process available" to unlock said phones. It's pretty clear at this point that the real reason is simply "Sprint doesn't want to unlock your iPhone." One last thing: Sprint's unlocking policy has an interesting twist of phrase in the fine print: "Sprint is working to ensure that all devices developed and launched on or after February 11, 2015, are capable of being unlocked domestically." So post-Feb 11, there's still a chance Sprint will flat out refuse to unlock most current phones.