The team at Sprint may no longer be selling Windows Phones, but the carrier is still supporting the older phones with new over-the-air updates. This week, Sprint started rolling out the Windows Phone 8.1 update to its version of the Samsung ATIV S Neo.
The support page on Sprint's site states that the update will bring the phone's firmware number to 222.214.171.124. Other than the Windows Phone 8.1 update, there's nothing else noted in the change log. AT&T's version of the Samsung ATIV S Neo got the same update a few weeks ago. It may take a few days for all of Sprint's devices to get the new update.
Owners of Sprint's HTC 8XT have been waiting patiently for the same Windows Phone 8.1 update to come to that phone — we contacted HTC today on this subject and they told us, "It's currently in the certified stage with Sprint and you can expect it in the near future."