Word on the street is that Sprint's version of the HTC One is in the midst of a software update today. Still no KitKat — we're looking to January for that — but some update is better than none. The sparse changelog (on the device, anyway) reads thusly:
HD Voice enhancements
Fixes and invalid alert message after inserting SIM card successfully
Good fixes, it sounds like. The update brings you to software version 3.05.651.5 and weighs in at about 250 megabytes.